Repayments must be made through the DES Office of Accounts Receivable and Collections (OARC). Please note that it is important that you wait 21 days.There has been an error in your favor! 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. The claim must be adjusted and the overpaid amount will be recouped. Do NOT send a check for the overpayment amount. These FAQs outline how to respond to an overpayment letter and provide guidance on next steps. On Question 2, check the first box. Also write on the form: "I want all overpayments on my record to be waived, even the amounts you have already collected."