Record the amount of overpayment due to you. Open the Application for Refund; you may fill it out online, but then you must print the completed form.This sample letter has choices to help you build your letter. When you write, pick the words that describe your situation. This memorandum serves as notification of an overpayment of wages that you received and the subsequent repayment that is your responsibility. NOTICE OF FOOD STAMP OVERPAYMENT (DEMAND LETTER) (Timely and Adequate). NOTICE. If you have an overpayment, we'll send you a decision letter. It will say how much you owe. The Division of Child Support Enforcement serves children and families that need help with financial, medical and emotional support. Benefit Overpayment Questions 573-751-4058, option 4.