1. In the sample letter, fill in your personal information. Use this sample letter to dispute incorrect or inaccurate information that a business supplied to credit bureaus.Use this sample letter to help you write your dispute letter. Learn how to write an effective collection dispute letter with our guide and templates. I respectfully request that your offices provide me with competent evidence that I have any legal obligation to pay you. Get your free copy here! 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. Fill out a credit dispute letter and include supporting documents. Below you will find samples of the four types of dispute letters we outline above. You can download a template letter in Word for each type of dispute.