1. In the sample letter, fill in your personal information. Address the letter directly to the lender or the person who requested it.Use this sample letter to dispute incorrect or inaccurate information that a business supplied to credit bureaus. Provide a clear explanation: Your letter should acknowledge and indicate why something happened. A credit card authorization letter gives someone permission to use your card. Learn how to write one, and when it's appropriate to use it. This sample letter explaining credit problems will help you focus your efforts when appealing to a property manager for an apartment. A credit card authorization letter gives someone permission to use your card. Learn how to write one, and when it's appropriate to use it. In the letter, reference the date of the initial contact and the method, for example, "a phone call received from your agency on April 25, 2024.