Hello and good day. After reading you story and experiencing the same. I am not going to bore you with another sob story. But if you ever read the book "The book of Martial Power" by Steven j Perlman. My story is very close to his.
So I would find another instructor and he does not need to berates you at all. If you are not getting the techniques that is on the instruct but if you are not practicing it is on you. But after reading I think the instructor is trying to show his or her dominance and it is not cool. Also look up David Dolbear website. There is a column I read of his about choosing a Tia Chi Teacher. I used that knowledge to pick a better teacher for myself. Well I hope this helps.