[Date]
[Name],
[Company and Address],
Dear ———– [Name],
You can understand my embarrassment when I was informed that my cheque to you # ———-[Cheque Number] was returned due to insufficient funds. That is why I immediately contacted my bank, who notified me that they had ———– [Bank error due to fail to process a deposit we made ————— days / weeks ago].
I have nonetheless enclosed a replacement cheque # ————— [Cheque Number] in the amount of Rs. —————– [Amount]. My bank will be forwarding to you a letter of apology regarding their error.
Sincerely,
[Name & Signature]