The Concerned Authority,
__________ (Name of Company),
__________ (Company Address)
Date: __/__/____ (Date)
Subject: Demand for advance payment refund
My name is _________ (name). This is to inform you that I made a payment of _________ (mention amount) in the name of advance payment for _________ (mention service).
I would like to inform you that I am not willing to go ahead and use your services, therefore I request you to kindly refund the deposited amount i.e. _______ (mention amount).
I shall be obliged for your quick response. In case of queries, you may contact me at the contact details mentioned below.
___________ (mobile number)