Except that's not the scenario in question. The person I was responding to (and in turn, the OP) was about someone explicitly not calling you by what you reques

Except that's not the scenario in question. The person I was responding to (and in turn, the OP) was about someone explicitly not calling you by what you request even after you ask them to please to so. In my scenario, it doesn't change much if Mike is a new employee at said company. The coworker still calls him Mikey even after the employee's requests to stop, which would be considered rude by a lot of people.