I"m sorry we didn't send it, becaus

I"m sorry we didn't send it, because we have to wait for instructions from the accounting department.

Results (Chinese) 1:

很抱歉我们没有发送它，因为我们不得不等待会计部的指示。

Results (Chinese) 2:

我“对不起，我们没有送，因为我们必须等待来自会计部门的指令。

Results (Chinese) 3:

我很抱歉我们没有寄它，因为我们必须等待会计部门的指示。