Use these letters to order your credit report directly from the big four credit reporting agencies. Be sure to include copies of the identification documents.In most cases the credit reporting company must investigate the matter within 30 days and give you a written response of their findings. For example: "I am writing to request validation of the alleged debt that you have contacted me about." This letter of Credit is irrevocable and transferable without charge upon receipt of your written instructions. 1. In the sample letter, fill in your personal information. Please read these terms and conditions carefully. The Board of County Road Commissioners of Monroe County, Michigan, hereinafter called the "BENEFICIARY", and. Bank letterhead; Account number; Routing number; Business name.