How To Write A Letter To Credit Bureau . The letter should be sent by certified mail, so the consumer has proof of the time and date the letter was sent and received. Attached copies of the debt validation. 50 Best Credit Dispute Letters Templates [Free] ᐅ TemplateLab from templatelab.com This is the most important section because it tells the bureau what needs to be. Writing tips for a debt validation letter. Fair credit reporting act if a consumer has disputed some information about a debt on their credit report and receives a letter from a credit bureau that the debt is verified as accurate, the consumer has the right according to the fair credit reporting act (fcra) to request the method of verification that the credit bureau used.