Most Helpful Guy
Don't tell them, if you think they are going to react like that.
Move, and then call them from your new place and tell them over the phone, but don't tell them where you are.
Hang up as soon as they freak out, and call them the next day. Explain very simply that you don't have to listen to their bullsh*t anymore, and if they can't talk like rationale adults, you'll hang up.
You need to train them to see you like an adult. And that means you NEVER lose your cool with them, but you hang up as soon as they start acting like d***s.
It may take quite a while for you to train them.2