I had a JVB game this week where A1 drove the lane and I called him for player control. As he dislodged himself from B1's chest, he yelled at me something like "I can't believe you called that foul on me..." loudly while coming straight at me. I promptly T'ed him and got out of there as his teammates got a hold of him. I also remember thinking that if he didn't like the first one; the T wasn't going to go over too well either.
Then, the coach started demanding to know what was said and what happened. I thought, at the time, he was overly worked up about this. He was demanding that he had a right to know... I finished reporting and told the coach the player acted in a unsporting way and left it at that (insert "ran away".) My goal was to get play going to redirect focus back on the game.
Come to find out, A1 was the coach's son. At some point coach stopped being a coach and really wanted to know what his son had done. I would avoid any contact with parents where there is a problem.