https://support.chess.com/article/648-what-do-i-need-to-know-about-fair-play-on-chess-com
The site has stated the incidence of cheating is less than 0.2%.
https://www.chess.com/article/view/online-chess-cheating
That said, discussions of cheating, potential cheating, or cheat detection are not allowed in the general forums.
557 Elo and an accuracy of 80%? Does that make sense? These people don't care if you talk to them in the chat, they don't answer. I can't play the game anymore, it's frustrating.