How To Write A Debit Note Letter . Credit request letter to supplier is written with a purpose to request credit statements in order to keep the account updated. These should always include the date, the name of the person who is paying the debt, the name of the person who is going to collect the debt, and the amount of debt. Debit Note Letter Format in Word Free Download from www.stabnet.org A promissory, or debt, note is a legal document that acts as a promise to pay a loan or a debt. When the orders are placed and later received by the customers, sometimes. Companies use these as a form of debt capital.