There's a systems failure.
機器系統出毛病了。
There's a breakdown.
出毛病了。
I'm phoning to complain about the product.
我打電話投訴產品問題。
I'm sorry to hear that. What exactly is the problem?
很抱歉。出什么問題了?
It's broken./It doesn't work./It's faulty.
壞了。/不運行了。/出毛病了。
I think I can do better than that.
我想我能做得更好。
What's the problem?
什么問題?
The problem is the photocopier isn't working.
問題是復印機壞了。
What's wrong? What exactly is the problem?
怎么回事?哪里出毛病了?
There's some paper stuck in the machine.
復印機卡紙了。