Telling an umpire that you disagree with his zone or didn't like a safe/out call is not a big deal. Getting personal is not part of baseball or any other sport. Let me let you in on a secret, a coach telling me to call it both ways, auto dump. Fans I will not touch but it still BS. What that means is you feel he is cheating. Two things I will not abide, being called a liar or a cheat. I will not ever do either and accusing me will get a coach a very short day. I leveled my brother once for telling me I was a liar, last time I ever hit him but he was an adult and college grad at the time.
I have a very low ejection rate over the years.....If you need to go, you go......but that is for participants.....
Like Mike, if a participant wants to shower early, the "call it both ways" comment will earn him a quick trip there....
All I have is my integrity..that comment is calling me a cheater and I wont have that.....
I haven't umpired in years. Got married, kids,began coaching,became a parent in the stand etc. But when I was young, Something like 20, I did eject a fan and I ejected her for life as far as I was concerned when I was umpiring a game and told her so. She was the mother of a 12 year old, close game, late inning, her son hit a routine ball to left side of infield and the throw was up the line. Batter (her son) and 1B collided, 1b happen to catch ball just before they collided. I called batter out, boys stood up,checked on each other and that was that. Except Mom said out loud "you should have cleated him! Kids were wearing metal spikes back then. I turned around and ejected her and told her if I ever saw her at a game again, i was ejecting her then too. Just so happened commisiner of league was in stands and helped make her leave. Her son said thanks 
. 3 year later here she comes as I am about to start a game. I just pointed at parking lot,she turned and walked to it. LOL