Make a complaint
Making a complaint doesn't always have to be a negative thing - it can be good to let a company know if something isn't to your satisfaction. Use our template letters for wording that gets the best results.
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Letter to complain about a faulty mobile phone
Use this template letter from Which? if your mobile phone develops a fault
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Letter of deadlock for a dispute with a mobile phone provider
If you're not happy with the way a mobile provider is dealing with your complaint you issue a letter of deadlock. Use this sample deadlock letter from Which?
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How to complain to your credit card company about a faulty product
If you want to make a claim to your credit card provider Which? explains what you should do
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How to complain to your credit card company about a service
If you want to make a claim to your credit card provider Which? explains what you should do
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How to complain to an ombudsman
Got an unresolved dispute with a company? An ombudsman could help. Follow the Which? step-by-step guide on how to take a complaint to the ombudsman.
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When to take a complaint to the ombudsman
An ombudsman can help resolve disputes with a company. But a certain procedure must be followed before you submit your complaint. Find out when you can take a complaint to the ombudsman.
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How to complain to the ombudsman about a mobile phone provider
Got an unresolved dispute with your mobile phone provider? An ombudsman could help. Follow the Which? step-by-step guide on how to take your complaint to the ombudsman.
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How to complain if a company goes bust
If a shop or business goes bust before you receive your goods you'll need to make a claim to get your money back. Follow our step-by-step guide.
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How to complain about unfair contract terms
Disputes over unfair terms arise when a company demands more money from you or tries to keep more money than it should. Use our guide to get your money back.
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Letter challenging a company's unfair contract terms
If you're in a dispute with a company or service provider over a term in their contract that you think is unfair, you can use this letter to challenge it.
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Letter of complaint about broadband speed
If you're not receiving the broadband speed that was promised to you before you signed up, you can use this letter to complain.
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Letter of deadlock to send to your broadband provider
Use this letter if you're not happy with how your broadband provider has dealt with your complaint.
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How to complain about your broadband speed
If you're not getting the broadband speed you were promised, you can use our step-by-step guide to complain to your provider and ask them to rectify the situation.
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How to complain about interruptions to your broadband service
If you're experiencing regular interruptions to your broadband service, use our step-by-step guide to help you make a complaint to your provider and get them to sort it out.
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How to complain when a package holiday is not what you expected
The golden rule for complaining about your package holiday is to report problems as soon as they happen.
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Letter to complain about tickets that are not what you ordered
Use this letter template to complain about tickets that are not what you ordered and ask for a refund.
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How to complain if your tickets are not what you ordered
Step-by-step guide on how to complain if your event tickets are not what you ordered.
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What to do if your tickets don't arrive in time for the event
Step-by-step guide on what to do if your tickets don't arrive in time for your event.
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How to complain if your card is stolen and you're refused a refund
If your card has been lost or stolen and your card provider claims you've been negligent, follow our step-by-step guide to get your money back.
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How to complain about unauthorised transactions on your card
If there has been an unauthorised transaction on your card and your provider refuses to refund your money, follow our step-by-step guide to get your money back.
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How to complain if the trader misses an appointment to start a job
If a trader you've employed to do work for you fails to turn up, follow our Which? guide to find out what to do
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How to complain to a company if you didn't get what you paid for
Didn't get what you paid for? Don't be left out of pocket. Use our guide to help get your money back or get the item you wanted.
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Letter to complain about builders in Scotland
If you're unhappy about the standard of building work you have received and you're based in Scotland, use this template letter
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Letter to use if the contractor does not respond to your complaint
If a contractor has not responded to your initial letter to remedy poor workmanship, use this template letter as a follow up
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How to complain about unexpected car hire charges
Have you had unexpected charges taken from your account by your car hire company? Follow our steps to get your money back.
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How to complain about your car hire company
If your complaint with your car hire company is not resolved, read about the options you have to take it further.
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Letter for a refund from your credit card for overbooked car hire
If your car is not provided you can also claim from your credit card provider under the Consumer Credit Act. You can use the letter below as a template.
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Letter to claim a refund if your car hire company is overbooked
If you do find the car you have booked is not available, lodge a complaint and follow it up with a letter as soon as possible. This template letter can help.
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How to complain about your holiday booking
Do you feel misled by your travel agent, or have a complaint about a company you booked with? Follow our steps for an effective solution.
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Letter for complain about misleading brochure descriptions
If you feel you’ve been misled by a travel agent or tour operator, don’t suffer in silence. Use this template letter to make a claim.
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Letter to ask the Property Ombudsman to intervene in your dispute
If you're unhappy with the way your complaint has been handled by your estate agent, you can escalate it to the Property Ombudsman using this letter.
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Letter to reject a commission claim due to 'no sale, no commission'
If you have a 'no sale, no commission' agreement with your estate agent, use this template letter to reject their claim for commission.
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Letter to reject commission as your home was sold be another agent
If an estate agent has requested commission for a property that was sold through another agent, use this template letter to make a complaint.
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How to complain if you're unhappy with your GP or GP surgery
We're not all lucky enough to have a great local doctor or GP surgery. But what can you do if you're not satisfied with yours? Follow the Which? step-by-step guide to help you complain.
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How to take a complaint to the health service ombudsman
If you have a complaint with your GP or GP surgery that you can't resolve, you can refer your complaint to the health service ombudsman Follow our step-by-step guide to help you complain.
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Which? Legal Service - call our helpline for specialist advice
Speak to one of the Which? Legal Service consumer lawyers to help you resolve a range of problems, from dodgy builders or unfair parking tickets to faulty goods or services.
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Letter to complain about your GP
Use the Which? template letter to help you make a formal complaint to your GP.
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Letter to your PCT complaining about your doctor
If you want to complain about your GP but feel uncomfortable raising it with them, you can complain to your Primary Care Trust. Use the Which? template letter to help you.
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How to complain about your landlord
It is an offence for your landlord to do anything they think would make you leave the home. Follow these steps if you have grounds for complaint.
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How to complain about your letting agent
If you don't feel your letting agent has done their job properly, follow the Which? step-by-step on what you can do next.
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Letter to complain if your energy supplier overcharges you
If your energy supplier has overcharged you, you can complain using this template letter
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How to complain about a payday loan company
If your payday lender is not dealing with your case fairly, you can put in a complaint and then if necessary, take it to the Financial Ombudsman. See how.
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Letter to complain if your supplier is being slow over a switch
If your energy supplier is dragging their feet over your energy switch, use this template letter to complain.
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Letter to complain about an inaccurate meter reading
If you receive an energy meter reading you believe to be inaccurate, use the Which? template letter to complain to your energy company.
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Letter to complain about overdue feed-in tariff payments
If your feed-in tariff (FIT) payments are late, use the Which? template letter to complain to your FIT licensee.
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Letter to complain about a mis-sold mortgage
There are several reasons why you may think you've been mis-sold your mortgage. If you have reason to believe you've been mis-sold, use the Which? template letter to help you complain.
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Letter to complain about the poor servicing of a vehicle
If you've receieved an unsatisfactory car service from your garage, use this letter to complain and seek resolution.
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Letter to complain about damage to your vehicle while at a garage
If your vehicle was damaged while in a garage's possession, use this letter to resolve the problem.
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Letter to dispute excessive garage charges
Have you been overcharged by your garage? Use this letter to complain and get your issue resolved.
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How to complain about doorstep selling practices
If you’re concerned that you’ve been mis-sold by a doorstep seller or you want to cancel a contract, use the Which? step-by-step guide to help you complain.
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How do I complain about poor garage service?
Received poor service, been overcharged or found damage to your vehicle after a visit to the garage? Read the Which? guide on what you can do next.
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How to complain to the Bank of Ireland
Use the Which? online tool to complain to the Bank of Ireland if you're affected by the increased rate of its lifetime tracker mortgage.