I respectfully request that your offices provide me with competent evidence that I have any legal obligation to pay you. 1. In the sample letter, fill in your personal information.This program will help you write a letter that formally requests the money you are owed. This is called a Demand Letter. Learn how to write an effective collection dispute letter with our guide and templates. 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. Here is a sample of successful dispute letter I've used in the past for clients. Get your free copy here! This sample letter explaining credit problems will help you focus your efforts when appealing to a property manager for an apartment. Samuel does not have any outstanding debts and has good credit.