（1）subject: Demanding Overdue Payment
Dear Sirs,
Account No.8756
As you are usually very prompt in settling your accounts, we wonder whether there is any special reason why we have not received payment of the above account, already a month overdue.
We think you may not have received the statement of account we sent you on 30th August showing the balance of US$ 80,000 you owe. We send you a copy and hope it may have your early attention.
Yours faithfully,
xxx
催款函主題：索取逾期賬款
親愛的先生：
第8756號賬單
鑑於貴方總是及時結清專案，而此次逾期一個月仍未收到貴方上述賬目的欠款，我們想知道是否有何特殊原因。
我們猜想貴方可能未及時收到我們8月30日發出的80，000美元欠款的賬單。現寄出一份，並希望貴方及早處理。
你真誠的xxx
（2）Subject: Urging Payment
Dear Sirs,
Account No.8756
Not having received any reply to our E-mail of September 8 requesting settlement of the above account, we are writing again to remind you that the amount still owing is US$ 80,000. No doubt there is some special reason for delay in payment and we should welcome an explanation and also your remittance,
Yours faithfully,
xxx
催款函主題：再次索取欠款