First, try to solve the dispute yourself. If you have a complaint, call your company first.In order for an overpayment refund to be processed in a timely manner, please submit a completed form with all refund checks and supporting documentation. Please download the form, complete each field and print. Include the form with your refund so we can properly apply the refund and record the receipt. Below are the ways you can submit a repayment. When you identify a Medicare overpayment, use the Overpayment Refund Formto submit the voluntary refund. If we have identified an overpayment and request a refund, please mail the check along with a copy of the overpayment request letter we sent you. Overpayment issues occur when patients or insurance companies pay healthcare providers more sum than they're owed. We have identified the following overpayment and are in good faith voluntarily refunding all monies collected in error.