Overpayment refunds of vehicle and business tangible property taxes will be sent within 2 to 4 weeks from the date of the payment or exoneration. We have identified the following overpayment and are in good faith voluntarily refunding all monies collected in error.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. The salary overpayment resulted because . Refund Letter Format: Requesting someone for the refund of your amount paid? 1. Read the letter thoroughly to understand the context.