Letter refunding invoice overcharge
2/07/2018
[Date]
[Recipient Name]
[Title]
[Company Name]
[Street Address]
[City, ST ZIP Code]
Dear [Recipient Name] :
We inadvertently over billed you on the invoice dated [date] , by $[amount] . Enclosed is a check for that amount. Please accept our apologies.
Sincerely,
User
[Title]