1. In the sample letter, fill in your personal information. I respectfully request that your offices provide me with competent evidence that I have any legal obligation to pay you.Many people ask about sample letters for disputing tradelines. So here is the one I use. A 609 letter is a credit repair method that requests credit bureaus to remove erroneous negative entries from your credit report. Debt collection letter from attorney can be a sensitive issue, no matter what side you're on. Don't let bad credit scare you away from an apartment. Write a letter explaining credit problems to your landlord and get a fighting chance. A debt verification letter is a letter you write to a debt collector to dispute a debt or ask for more information about the debt. How to Write Readable Credit Forms.