Chess.com takes cheating very seriously: see https://support.chess.com/customer/en/portal/articles/1444879-fair-play-on-chess-com-what-you-need-to-know and https://www.chess.com/blog/DanielRensch/cheating-on-chesscom.
Having said that, public accusations in the open forums is not the way to address these concerns, so I am locking this thread; please report any suspected cheating to the Support team via https://support.chess.com/customer/portal/emails/new and trust that it will be investigated, even if there is no immediate visible action.
To learn more about cheat detection, please join the Cheat Detection Club at https://www.chess.com/club/cheating-forum
Thanks,
Dalek - MOD
i got 45 sec left and my opponent have 14 sec. i moved faster than him( whole game), still he wins on time.(please, mind your language-MOD)!! it happens all the time, how the (please, mind your language-MOD) they cheat.Every time dome asshole gets additiomal time and beats me on time. this sucks