The Vehicle Payoff Sample Letter form is a crucial document for individuals aiming to transfer their vehicle loan to the State Department Federal Credit Union. A demand letter is an official notice requesting money, possession of assets, or action on a legal matter.Download application forms for accounts and services, get information about credit union fees and more from Suffolk Credit Union in NY. Explore online. First, get a piece of paper and a pencil or pen. Then write your request on the paper. Restated Agreement and incredible Plan. Step 3: Fill out an application for a Payment Plan. You can only set up a payment plan if you've received a bill from us. In the Suffolk University.