same experience....when lost is apparent they flee ! Why chess ,com does little ?   Suspend their playing privileges and tag them w/ a lost,maybe that nonsense will slow down.

This happened to me twice yesterday on the mobile app.  Their clock kept running down to zero, but when I look in history, I lost by resignation.

Please refer to this page

http://www.chess.com/forum/view/community/chesscom-policy-on-cheating

We provide tools to report cheating to our staff. But having several constant and redundant threads on the topic that circulate with the same questions and comments over and over again isn't helpful, and instead causes people to worry more than they need to. If you want to discuss cheating, please do it in this group

http://www.chess.com/groups/home/cheating-forum