Learn what "there must be a mix up somewhere" means, when people say it, and how to use it naturally in English.

It means the speaker believes something was confused, mistaken, or entered incorrectly.
From Married To My Brother’S Ex, Episode 37
The speaker thinks there has been an error or confusion somewhere.
Use this when asking for a correction in a polite way. It is common in everyday English and works well in work or service situations.
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