Apology for Returned Check, Replacement Enclosed
[DATE, ex. Wednesday, June 11, 1998]
[NAME, COMPANY AND ADDRESS, ex.
1234 First Street
Anycity, Anystate 85245]
Dear [NAME, ex. John Smith],
You can understand my embarrassment when I was informed that my check to you (#[CHECK NUMBER]) was returned due to insufficient funds. That is why I have immediately issued to you this letter and replacement check (#[CHECK NUMBER]), which is enclosed.
Please accept my apologies and assurance that this will not recur.
[YOUR NAME, ex. Jill Jones]