1. In the sample letter, fill in your personal information. Here is a variety of sample credit letters you can tailor and send to credit card companies, debt collectors, and other credit bureaus.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. We've included a sample credit report dispute letter that you can send to credit bureaus. Use this free template to simplify applicant data collection, ensure accurate credit assessments, and enhance your approval process. We've included a sample credit report dispute letter that you can send to credit bureaus. Because chargeback windows can vary, we suggest storing all signed authorization forms for up to two to three months after you stop charging the card on file. Feel free to send our office a check or visit the link detailed in the invoice to remit payment if you'd prefer to use a credit card.