How to use the template: 1. In the sample letter, fill in your personal information.This page includes forms, fees, and instructions for all domestic business entities, foreign and domestic Registered Agents, and Washington Trademarks. Sample Letter of Credit in MS Word format. Use this sample letter to dispute incorrect or inaccurate information that a business supplied to credit bureaus. If you disagree with an individual or a company, and informal efforts to resolve your dispute fail, you should write a demand letter. I respectfully request that your offices provide me with competent evidence that I have any legal obligation to pay you. How to use this sample letter: 1. Read the background below. 2. Use this sample letter to dispute incorrect or inaccurate information that a business supplied to credit bureaus.