take (something) up with (one)
To initiate a discussion about something with someone, often regarding a problem or complaint. We'll take up the issue with the directors at the next board meeting. I'm sorry for the inconvenience, but you'll have to take it up with customer support.
take up with someone
to become close with someone; to become friends with someone. I think that Albert may have taken up with the wrong people. I did not want Lefty to take up with Max, but he did, and look where it's gotten him.
take up with
Begin to associate with, consort with, as in She took up with a fast crowd. [Early 1600s]
take up with
Informal To begin to associate with; consort with: took up with a fast crowd.