Most appeal and request letters require a page or two. 1. In the sample letter, fill in your personal information.I would like to request to your good office to stop sending and calling us to collect payments. See the sample form on page 8 for a visual example. Our guide will teach you how to write a letter of explanation, plus offers a free template to help you write one of your own. Letter of Credit History. Do you need to provide a letter of Credit History for school verification or other purposes? Use our self-service features to instantly generate a copy of your credit history, letter of residency and more. A goodwill letter is a correspondence that asks creditors to remove negative remarks from your credit reports. Instructions to submit forms online: Most forms are available in an online format.