We have identified the following overpayment and are in good faith voluntarily refunding all monies collected in error. 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. In order to recover an overpayment, a carrier must notify the provider within 180 days of the date the provider received the overpayment. Complaint Information. Please explain your complaint: Try to be brief, but be sure to tell WHAT happened, WHEN it happened and WHERE it happened. Overpayments. Information on overpayments and overpayment waivers. Other Assistance and Resources.