New to Pole and disappoint to the point of quitting!!

Hi everyone, my name is Lisandra. I'm new to pole, just started about 5 months ago and I love it. I wanted to get everyone's opinion on a situation I was put on. I currently have a pole in my apartment, not too much space, but since I'm new I don't think I need much space. I decided to visit a studio that's about 20 minutes away, just to see how it was and pick up some tips, I was hoping to do a membership if I liked it, to my surprise the moment I walked through the doors I felt uncomfortable because I got some dirty looks. I decided to stay because I thought maybe it was my nerves or my imagination playing tricks on me. I approached the counter and I told the lady at the counter I wanted to sign up for their intro class, she gave me some paperwork to fill out and when I paid for the class, she asked me where I was from, I told her I was born in Mexico, she told me she knew I wasn't American because I had an accent but her tone of voice was very nasty and she kinda rolled her eyes. I know I have a bad accent, but I'm proud to bilingual, well then she showed me to the pole room, I have to say it was beautiful. I met a couple of girls that were new to pole also. Class started and everything was going fine until we started practicing to invert, the instructor went around making sure we all were properly placed on the pole and we had the correct grip, everything was fine until some of the girls started to invert, I was impressed and I wanted to do it, I told the instructor if she could help me and she told me that I was to fat to invert, that I needed to lose some weight and then I was going to be able to invert properly, because of those "fat" girls that invert are doing it wrong and that no one in her class was going to invert the wrong way. I felt so embarrassed, I just walked away with tears in my eyes and didn't even finish class. I went to tell the owner what had happened, and she told me that if I wanted to get injured I should go to another studio because her instructor are the best and that she was not at fault for anything, to take her comment as a challenge to lose weight! That she is sick of seeing all these over weight women saying that they can pole and making fools of themselves in the pole community. I asked her for a refund and she said NO, and that if I didn't like their teaching technics, to look for another studio. So I feel that I was discriminated due to my race and being overweight. What should I do? I don't want anyone else to go through what I went through, I spent 2 days crying and I wanted to quit pole, because this is not what I thought a pole community was all about, I thought everyone got along and helped each other out.