I did not want to sit with them.
You don't like them? Tell me why?
They do not like me and they only invited me to sit with them because they wanted to make fun of me and I don't like it.
Well those are people who should avoid assuming that's true. They should not do that to anyone.
They don't feel bad.
I am sorry you have people like that around you. You are doing the best thing by protecting yourself and not sitting with them.