They already said you would get disfellowshiped when they met with you the first time. What is the point of the JC meeting? Just so they can say they followed proper procedure and tick the box on whatever forms go to HQ.
Like everyone says, going now only gives them the impression that you accept their authority over you. Do you? No and rightly so.
No need to communicate with them at all, ever. They will disfellowship you anyway.
Good on you for being a true friend, it is so rare in the religion we grew up in.