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.Our document template is designed to make the process of writing an "Inform a Customer of an Overpayment" letter quick, easy, and stress-free. Create a professional overpayment email template with our AI assistant. In Benefit Overpayment Services, you can make a payment, view past payments, and set up an installment agreement to make monthly payments. We have identified the following overpayment and are in good faith voluntarily refunding all monies collected in error. Step 1: To file a Request for Waiver, fill out form SSA-632-BK, called a. "Request for Waiver of Overpayment Recovery.