{A person} uses a cheat or glitch to join my invite only parties when i am alone, or in the middle of a raid, and even on other games. I have blocked him and muted him, but my team is always messed up when he joins because he distracts everyone, making it impossible to do anything, and i labeled this as bullying because he does this to make fun of me, make me angry, and rob me of what time i have to play with all my friends. I have talked to xbox live customer suport, reported him, made a post on the xbox live support forums, and they have done nothing yet. I need some way to get him to stop.