Texan & Denis it is not that you are not right but PF is telling you the way it really is. I don't care what level it is the UMPS have discretionary calls and one of the things a parent and coach should do is train the pitcher and even the catcher not to ract to a bad or questionable call. That is where the Mental Toughness comes in.
You train a pitcher to not let outside forces interfer with your game. You don't let your opponent see weakness and you don't diss the UMP. The game is not over until it is over or the coach takes the ball from you.
Mental toughness is a trained response and it comes easier to some than others. Parents / coaches over reacting to bad calls sends a message that it is normal. Normal is not what you expect from a great pitcher. You should expect a class act regardless of how good or bad your day is going.