I'm only going to respond to this part of the conversation, as I think a lot of the rest has been covered quite well.

Everyone here is responding to the way that you have portrayed events; we're responding to your wording, and your biases, and your misconceptions. I don't know for sure about everyone else, but I can see quite clearly in your posts that you have a lot of insecurity issues, and that you easily misinterpret what people are saying.

This leads me, and likely others, to conclude that there's probably some things in your behaviour and the way that you approach others in real life that is causing the social issues you keep encountering - so we're looking beyond the two events that you've outlined. We're likely all trying to help you see that, and we'd all like you to be happier in your life. But just blaming others won't do it, because from what you've told us it's almost certainly your own actions that have left you feeling isolated. Have you likely encountered a lot of jerks? Sure, everyone has. But for every single group of people you've encountered to all be judging you and excluding you due to things like your height? No. There's bound to be something else, but unfortunately none of us here have witnessed you in action so we really can't offer you anything more substantial!