mix-up

Because of a mix-up [=mistake, error] at the hotel, we were overcharged for our stay.由于宾馆的失误，我们被多收了住宿费。

The mix-ups nearly cost him his job.这些差错差点儿让他丢了工作。

I thought you were someone else. Sorry for the mix-up. [=misunderstanding, confusion]我以为你是另外一个人呢。对不起，认错人了。