Some time ago, I had a student answer his phone in class and carry on a conversation as he walked out of the room. When he returned, I approached him and quietly reminded him that he lost points for answering the phone in class. He asked me where the dean's office was located—the academic version of "I want to see the manager."
I told him where to find the dean and if he left, he wouldn't be permitted back because the class had been disrupted too many times that day. He did leave, and later that day, an administrative assistant from the dean's office contacted me and said the student had filed a complaint against me. She wanted to know if he could re-enter my class.
Read Educating our 'Customers' by Brian P. Hill.