[l-Date]
To:
[r-Name]
[r-Address]
From:
[s-Name]
[s-Company]
[s-Address]
[s-Phone]
RE: [s-Reference]
Dear [r-FName]:
Enclosed is our check in the amount
of [s-CheckAmount] which represents a refund for your duplicate remittance for
payment of [s-Purpose].
We are pleased this overpayment was
quickly discovered.
Best regards,
[s-Company]
[s-Name]
[s-Title]