This Overcharge Refund Letter is for use when a customer was mistakenly billed and a refund is necessary. This letter sets out the invoice number, its date and the amount the customer was overcharged. It also extends a sincere apology and encloses a refund check. A written Overcharge Refund Letter is important because it will serve as a written record of the customer’s refund. This Overcharge Refund Letter contains the following: Parties: The name and address of the company and the customer who was overcharged; Refund Information: Sets forth the invoice number, date, amount overbilled and correct amount. The customer’s refund check is enclosed with this letter. This attorney-prepared packet contains: Instructions and Checklist Overcharge Refund Letter State Law Compliance: This form complies with the laws of all states