Is AUTHOR wrong in the post ? POST : My co worker / friend is with me at a conference. He was in a clinic, I was talking to an old professor about coming to visit our work. 

I was in the middle of looking at my calendar and talking to this professor about dates for him to visit when said friend began calling. I red buttoned him because I needed to view the calendar, this happened twice in thirty seconds. 

The conversation ended, I walked out of the room to find him, immediately saw him, and now he’s in a shut down state and was very disrespectful to me in front of our colleagues. Then proceeded to say he wasn’t hungry and sat in the car during lunch.

He believes I should have answered the phone, regardless of the conversation. 