I dont blame you for being upset, flying has become so frustrating for everyone and some of the gate agents are ridiculously nasty--and since they have the power to pull you off a flight you have to put up with it. I got into it with a gate agent and I stopped myself realizing the power she had, but she got back at me by making me check my bag even though I was in first class and was one of 2 passengers there--I try to be as super sweet nice to them as i can always, but some of them come to work looking for a fight, as do some passengers. Im glad the supervisor was able to assist.