1. Ensure that you are eligible for a refund. If you have any questions regarding the filing of a "Claim for Refund," please call (213) 744-9724.Return all signed refund claims to: Office of Finance. A claim for refund is a request for reimbursement of amounts previously paid. Generally, if you have paid your balance in full you will file a formal claim. In this article, we'll show you how to write a refund request letter template that not only grabs attention but also persuades companies to act in your favor. Fill out claim as indicated; attach additional information if necessary. 3. Please return this original signed claim and any attachments supporting your claim. To submit a claim for refund, simply login using your username and password and click on the account for which you want to request a refund. Add the details of your request for refund onto a pleading document and eFile.