I hate it when people call me up on my home phone and say, "Where are you?" Although I do comeback with, "I'm at the beach! How'd you get the number?"
I really hate it when someone calls me, and then says, "Oh wait! Can you hang on for a minute?" NOPE!
And when someone argues adamantly on a point and when they are proved wrong, they say "well you misunderstood what I meant"- just be human and admit you are WRONG!!!!!!!
I hate when people say, "That's not my job"
But the thing I hate the most, is when people make judgements about people based not on fact but on their own narrrow-minded views.