I agree. He sounds like a real jerk and you don't need that. Take your hard earned money elsewhere. If I were there, I could tell him off for you Don't take crap from people! To a certain extent, we allow it. For you to gain more self confidence, you've got to start standing up for yourself. Otherwise, people are going to see that and walk all over you. I wouldn't waste time on worrying about that guy because he's surely not worth it. Find someone who's happy to be teaching, not frustrated.