How do you know they've done nothing wrong?
Will i get banned?
I gained 800 elo in the last 7 days in Bullet, without breaking any rules, but i am really scared that chess.com might just ban me as i gained way to much elo way too fast. Will this happen?
If you cheated, then perhaps. If not, you have nothing to worry about.
I didnt cheat
You ll defininetly dont get banned, since you did nothing wrongm