Collection Letter - Insufficient Funds (NSF)

[Your company name]
[Your company address:
City, State, Zip]

[Debtor's name]
City, State, Zip]

Re: Insufficient funds - Account No.: ______ Amount: _______

Dear [Debtor's name],

Thank you for your payment on ____________, (check number 1023 for the amount of $400.) Unfortunately, it was returned to us for insufficient funds. Please send us the full payment, plus a $20.00 service fee for the returned check by ____________ to avoid additional charges on your account. If you have any questions, please feel free to contact us at ____________________ (phone number or email address).