Was it a V8 or a slant 6?
player use engine to play

Chess.com takes cheating very seriously - for example, see https://www.chess.com/article/view/chess-com-fair-play-and-cheat-detection
However, making an accusation in the public forums is not the correct way to deal with it. Make sure your opponent really is cheating by verifying with the Cheating Discussion club at https://www.chess.com/club/cheating-forum and then report it to the Support team via Help --> Report Abuse or https://support.chess.com/customer/portal/emails/new
I am now locking this thread.
Thanks,
David, moderator
the nick called [Name removed - David] use engine to play chess here.please reject her account