这是我们工作上的失误。为您带来了不便我们非常抱歉，我们会尽快派人为您处理它。

I am very sorry for any inconvenience what we brought to you, we will dispatch service engineer to fix it as earlier as possible.

youdao

因为我的失误给大家带来工作上的不便，我深感不安并真诚的道歉。

I feel very sorry for the inconvenience I brought to your work because of my mistake and want to apologize sincerely.

youdao