You will need your remittance ID in order to repay your Social Security overpayment on Pay.gov. We inform people about the fact and amount of the overpayment, their right to appeal, and the options to repay or, in some cases, receive waivers for the debt.What Will Happen to My SSI If I Have an Overpayment? Please call 1-800-772-1772 or your local field office and we may be able to process your waiver request quickly over the phone. If you have an overpayment debt, you may be eligible to make a full or partial payment using Pay. Gov or your bank's online bill pay option. You should file an appeal if the overpayment seems incorrect, you are not clear what caused the overpayment, or the SSA's numbers seem wrong.