Money orders are safe alternatives to cash, and filling them out correctly is key to avoid payments getting canceled or refunded. Fill in the recipient and your address; for bills, include an account number; sign it; keep proof of payment.Here's a step-by-step guide on when to use a money order, where to get one, and how to fill it out correctly. Fill in the recipient's name. Double-check to make sure the money order amount is correct. When filling out a money order, you'll need some basic information, such as the recipient's name and your address. Click "forms" and enter the form numbers below (all forms begin with AOC-E-__). How to Fill Out Complaint for Money Owed. Submission of Documents. Cover Letter; Payment in form of money order or check; The original document(s) with all certifications attached