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. Fill out a Request for Change in Overpayment Recovery Rate.This form is attached. If we can't waive collection, we may use this form to decide how you should repay the money. Please answer the questions on this form as completely as you can. SSA Call Center at 1-800-772-1772. Form SSA632, Request for Waiver of Overpayment Recovery, can be used to seek a waiver. If the employer doesn't adjust the overcollection, you can use Form 843, Claim for Refund and Request for Abatement to claim a refund. When To Complete This Form.