Not really the way chess.com wants you to handle it. Here's the article on cheating:
ENGINE CHEAT 100% CERTAIN

If this player was playing the entire game with an engine, he was either playing with a really bad engine or moving too quickly to allow the engine to recommend good moves.
You are easily winning by move 40. His 40...Kf8 makes no sense. After 41. Nxd3 you are still up an entire piece with better pawn structure. Things go downhill from there after you blunder the game away by pointlessly checking with your rook instead of trying to push your queenside majority.
100% this guy way cheating, I ran the game through an Engine and every move he made was an Engine move apart from his first move
It makes sense!!! he started with a stupid move 1.h5 because confident he was going to win, then every move after that he made was engine moves
fortunately I played accurate moves but it cost me a lot of time, whereas he made moves with a consistent interval
Please ban this guy