急求催促付款英语范文，谁有外贸催款经验的，谢谢了！

Subject:Invoice No.4718
Dear Accounting Manager:
This is just to remind you that yuor payment is overdue .
Our invoice No.4718 for $1,500 has not been paid yet.
Please check your record, and let us know if you have any questions regarding this payment.

If payment has been made,please disregard this e-mail.
Thank you.

Bill
You must pay for 1500 dollars ,The check No. is 4718 .

外贸紧急催付信怎么写
1.We cannot understand why your company has failed to repond to all our inquiries, because your account is seriously in arrears.

2. We are unwilling to accept any further orders from your company except on a cash basis until you have settled your past-due account of $1500.