Who does it sound like is in the wrong, me or her?

Before, I had been a doormat to another girl who never even cared about me for about three years and she finally let me have it and told me she didn't want me around. I did community theater a lot and during a summer show I wanted to be bffs with the girl I met in the play I did before it. There were a bunch of other girls hanging out with us in one group and I told one of the girls in the group, one of my best friends, to try and distract them the rest of the summer so I could have the girl to myself. But then right when I least expected it, I met this new girl I had never seen before. She was so...weird. I had never met anyone like her before. I got closer and closer with her over the summer and we really hit it off. At the cast party, she gave me her email and phone number. About a week or two later I decided to call her and we started hanging out. We went to see a play at the theater and she brought my ex without even telling me. I was mad but I got over it. Then soon he started dating that same girl and she started hanging out with him instead of me. I smoothed things over with him and got him to tell me that he actually cheated on her and blowed 39 guys on a day out for his birthday. I told her what he did and she actually came back to me for a while, but then when the summer production came around by the third week of rehearsals she was completely ignoring me for him, regardless of what I told her. And she replaced me with this one girl who's dad owns this golf resort because her mom liked this girl better than she did me and her mom never approved of me. It made me really sad and I just kind of kept to herself and then her mom called my mom saying I was clinically depressed and had tons of issues. I gave it a while and then I started going to her dancing lessons, she was really sweet and for a while we got close again and we were back. But after I started going dancing with her for a while she started talking to these two twin girls and blowing me off completely. I brought her candy one time and she just kind of shrugged at me and gave me the cold shoulder even though I didn't do anything wrong and the whole time she was dancing with these girls and laughing and smiling and it was like I didn't even exist. After that I never went back there. I gave it a few months. I tried to comment on her facebook post. She continued to ignore me. Then when she finally responded out of my frustration I said shut up I don't even want to talk to you. Then her sister was like please explain your comment I don't understand it. I said if I don't want to talk to her then why would I want to talk to you. Then they both blocked me on facebook. I gave it about three months then I called and her sister answered. I said is your sister home, she said no, I said why did you both block me on facebook, she said sweetie what you said was really rude here let me try it on you, I don't want to talk to you right now, then she hung up. They are so mean and evil and I hate them I want revenge and they need to be put in their place, should I go back and tell her off at her dancing lessons or call her and tell her off?