You poor darling, what a terrible time you've had. Your parents have treated you extremely unfairly, but you can go on to survive this and flourish. It won't happen overnight and nor will it be easy, but the fact that you know what is happening to you and are reaching out is such a good sign. To call a child stupid over and over and to betray their privacy is abuse, most definitely. You say you are at university.They will have a student counselling service there. Make contact and see if they can counsell you or refer you on to a good counsellor outside the university. You need somebody on your side, somebody to support you while you work through this and find your way into adult life without the fear your parents have dumped on you. I wish you the very best with your efforts.