If you are experiencing disconnects, this could be caused by quite a few things. try clicking the following link and trying the suggestions found there.
http://support.chess.com/Knowledgebase/Article/View/167/0/my-internet-connection-is-fine---why-am-i-getting-disconnects
Also, I'm not sure if you are implying that your opponent was deliberately disconnecting you (not saying you are)... but to stop anyone from saying otherwise, I will just say that, that is pretty much impossible :)
something seemed fish about my last match - toward the end of the game there was a 'disconnet interrupt' in what seemed to be after my every move,, then the connection would return and my opponents piece was already moved. a few times i was unaware and precious seconds had ticked away. needless to say my opponent won on time; but i have never felt like there was an 'intentional' connection interruption. wondering if anyone else has experienced this situation.