This e-book provides templates for 21 most effective credit and collection letters that will help you communicate better with your customer. Download our sample letter and instructions to submit a dispute with a credit reporting company.Attached to this Credit Application is the most recent financial statement of the undersigned. 1. In the sample letter, fill in your personal information. Use this sample letter to dispute mistakes on your credit report. Office of Business Opportunity. Documents and Forms. This letter should acknowledge the receipt of an applicant's request for a credit account and ask for more information to help you evaluate the application. Doing so can vastly improve your credit score, making it easier for you to obtain future loans. For your convenience, we have made some common housing forms available for your use.