Everytime I go in there they are rude. I had a pac...

Everytime I go in there they are rude. I had a package that didn't get delivered because I wasn't home so I went to the post office to pick it up. I waited in line forever just for the guy to be a jerk and say "well the trucks aren't even back yet I mean you should have known that before coming down here! " How was I suppose to know that? I don't work there! People should really learn how to talk to customers. It's one thing if your having a bad day and not all smiley but for you to be completely rude and scream at me is unacceptable!