NOTICE OF FOOD STAMP OVERPAYMENT (DEMAND LETTER) (Timely and Adequate). NOTICE. A benefit overpayment is when you are given more money than you are entitled to.This may happen if we don't know your circumstances have changed. Fill out a simple, secure Demand Letter questionnaire and Courtlinked handles all the legal form filing work. An overpayment of benefits can occur for a number of reasons. Knowing how they can occur can help you avoid such a circumstance. Waiver applicants should be prepared to submit supporting documentation (e.g.