怎么用英语催国外客户付款啊？

发催款函，英语可选用：\x0d\x0aReminder of Payment（付款提醒函）\x0d\x0aNotice of Delinquent Payment（欠款通知）\x0d\x0aNotice of Overdue Payment（付款逾期通知）\x0d\x0a例：\x0d\x0aThis is a reminder that your account balance of $ was overdue as of . Enclosed is a statement of account foryour reference.\x0d\x0aPlease arrange payment of this account today or, if you cannot make full payment at this time, please contact us to make a payment arrangement that is mutually acceptable.\x0d\x0aYour prompt attention to this matter would be greatly appreciated. If youhave any queries regarding this account, please contact our office as soon aspossible.\x0d\x0aIf payment has recently been made, pleaseaccept our thanks and ignore this reminder.\x0d\x0a \x0d\x0a与国外客户生意往来常会出现拖欠款项的情况。如果有相关合同条款，按合同条款办。如果没有，催款通行的做法是发30天、60天和90天的催款信。如果数额巨大，120天后可通过律师发律师信或追款公司追讨所欠款项。

FUK U!give back my money,u motherfuker!or i gonna kick u in the nut!这样就可以了。

Dear XXX:
We understand your difficulties very well, but business is business. The company has a mandatory rule that no delivery will be made without receiving the balance.In order not to affect the normal operation of each other's business, please pay in time.
If the payment is not received beyond the prescribed time, we will charge interest according to the actual practice and ask you to pay additional storage fee.
If payment is not to be make exceeds the specified time half a month , we will handle it through the Chinese Embassy in your country.
At the same time, we will also inform other Chinese suppliers and your competitors of your dishonesty in the form of a letter, and take legal measures to solve the problem.
Therefore, in order not to damage your business and reputation, please cooperate with us in payment.
Regards!
XXX

Dear Customers,According to our contract, the payment is past due. Please make the payment as soon as possible so that we can process to the next stage. The payment should be made no later than March 31st. We have already sent the reciept, please respond to confirm that you have recieve it.thanksXXXXX

To Whom It May Concern, We sent you email on xxxx(date) and wanted to check out whether you have received our invoice for the shipment on xxxx(date), but we haven't received any response from you yet. I would like to remind you that the deadline for payment is coming according to our contact. I would appreciate if you would be able to make your payment before March 31, 2010. Please contact us should you have any questions! Sincerely yours,xxxxx