If you're unhappy with the way your complaint has been handled by your estate agent, you can use this letter template to escalate it to the Property Ombudsman.
Ref: [address of seller’s property]
I am writing about my dispute with [property agent name and address], who I understand is a member of your scheme.
My dispute concerns [details of your complaint].
I enclose copies of all relevant correspondence, including the particulars that the [estate/letting/managing - delete as appropriate] agent drew up on my behalf.
I have been unable to settle the matter with [property agent], and am therefore referring the matter to you in the hope that you will be able to resolve the dispute.
I look forward to hearing from you within the next 14 days.