First time I've read posts before the moderators have come and cut them.

But back on the OP, I really do not think that you should try to retaliate before you see someone about the issue. If your parents won't listen, take it to the school. Even if you seem cold and that you are not trying to socialise, then that causes no harm to other people and they have no right to be causing you this misery. Please, go to the school authorities with it. Or even just a teacher, but let them know there is a problem.