Reminders for payment of outstanding Bill

Reminder for payment of outstanding bill amount

---------------
I don't know your situation, so I created this example from the famous gangster Bugsy.

Dear Mickey Cohen,

RE: Invoice Number DIE23452

As of this date we have not received payment on the above invoice, which was due on April 13.

We value you as a customer, and hope that you will pay immediate attention to this matter. If you have any questions about this invoice please contact me.

As per the terms of sale, we will apply a penalty fee for overdue invoices beginning on May 13.

Sincerely,
Bugsy Seagel