Your letter must include your name, address, Social Security number, and why you disagree with the determination. We have identified the following overpayment and are in good faith voluntarily refunding all monies collected in error.In this article, we'll show you how to write a refund request letter template that not only grabs attention but also persuades companies to act in your favor. A claim for refund is a request for reimbursement of amounts previously paid. Generally, if you have paid your balance in full you will file a formal claim. The salary overpayment resulted because . This brief but important letter notifies a customer that he or she has overpaid you. It can serve as a very good customer relations letter. Defendants must submit a letter of request along with a refund form to receive a refund for payments made to the Central Violations Bureau.