1、May we remind you that there is a balance due on your account?
（請允許我們提醒您,在您的賬戶上有一筆到期的款項未結算.）

2、The balance due me is $100.
該付給我的差額是一百美元。

3、May we remind you that there is a balance due on your account
（請允許我們提醒您,在您的賬戶上有一筆到期的款項未結算）

balance due翻譯