Sample
[DATE, ex. Friday, February 10, 2006]
[NAME, COMPANY AND ADDRESS, ex.
Robert Brown
XYZ Inc.
1234 First Street
Suite 567
Anycity, Anystate 85245]
Dear [NAME, ex. Robert Brown],
We have just received your payment of $[AMOUNT, ex. 5,200.24] for [PRODUCT(S) / SERVICE(S), ex. your order of five Magnaflux compressors]. Thank you for your payment. Our records, however, indicate that the total billing for that invoice (#[INVOICE NUMBER]) is $[AMOUNT, ex. 5,400.24]. Please check your records to ensure that I have not made a mistake.
Unless I hear from you, there is no need to send us a check for the remainder; we will debit your account by $[AMOUNT, ex, 200.00], to be added to your next invoice.
Please call me at XXX-XXXX if I can be of any assistance.
Sincerely,
[YOUR NAME]