Demanding Overdue PaymentDear Mr.（此处写客户名字）, 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 following account, already one month （此处 one month 替换成实际的超期时间） overdue. We think you may not have received the statement of account we sent you on Oct 26th,2015 （此处 Oct 26th,2015 替换成第一次催款的时间） showing the balance of US$ 80，000 （此处 US$ 80，000 替换成实际欠款金额） you owe. We send you a copy and hope it may have your early attention. Yours faithfully,LeeSales managerBank Account:以下写名收款银行帐号
