1. How to start your letter?

　　I am writing to remind you that you have not settled our invoice #________ for $________.

　　It has been two months now since we delivered your garments, and we have yet to receive your payment for ,890.50.

　　We would like to remind you that payment of your account at Metro Mart is past due.

　　May we call your attention to your payment for the disks we delivered to you two months ago?

　　We would like to direct your attention to the following freight bills which are unpaid beyond the credit period permitted by our agreement.

　　2. How to add more details?

　　A copy of our bill for $_____ is enclosed along with an envelope for your convenience.

　　We have enclosed a copy of the item listed below that remains open on your account: . . .

　　This amount should have been paid by ________[date], so you can see it is quite old.

　　3. How to specify your request?

　　Please let us know when you will pay or at least start by making partial payments.

　　Please use the enclosed envelope to send in your check for $_______.

　　If your check is in the mail, we say \"Thank you.\" If not, won\‘t you please give this your prompt attention.

　　If you are not able to pay the balance in full at this time, please let us know and we will be glad to arrange an installment plan with you.

　　It is to your advantage as well as ours to keep your credit accounts current.

　　4. How to end your letter?

　　We would appreciate prompt payment.

　　We greatly appreciate your prompt payment of this sum.

　　Please let me know if I can be of assistance.

　　Thank you for your attention to this matter.

　　If you have already sent your check, we thank you for doing so.

　　If you have already sent your payment, please disregard this notice and accept our thanks.