[DATE, ex. Wednesday, June 11, 1998]
[NAME, COMPANY AND ADDRESS, ex.
1234 First Street
Anycity, Anystate 85245]
Dear [NAME, ex. John Smith],
We purchased paper supplies from you under invoice no. [INVOICE NUMBER] dated [INVOICE DATE] in the amount of $[AMOUNT OF INVOICE].
The supplies were subsequently returned to you unused on [DATE OF RETURN OF SUPPLIES], at which time you assured us that we would receive a full refund.
We are still awaiting our refund. Please provide us with a Check representing the above amount as soon as possible.
[YOUR NAME, ex. Jill Jones]