Your letter must include your name, address, Social Security number, and why you disagree with the determination. You must complete and return the Application for Overpayment Waiver (DE 1446UI) to be considered for a waiver.Please call 1-800-772-1772 or your local field office and we may be able to process your waiver request quickly over the phone. 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." The CalFresh office has many ways of collecting overissued (overpaid) CalFresh benefits.