NOTICE OF OVERDUE ACCOUNT
Date： _
To： _ [Customer]
The payment due us on _， 19_， in the amount of $_ has not been received.
Please give this matter your immediate attention and mail a check without further delay.
Very truly，
______________________________
Date： _
To： _ [Customer]
The payment due us on _， 19_， in the amount of $_ has not been received.
Please give this matter your immediate attention and mail a check without further delay.
Very truly，
______________________________