What can be done now?

Dear sirs,

 One of my opponents uses all time limit (~3 days) for a move (even if the move seems obvious) and for the second time DECLARED THAT HE IS ON VACATION for a month just an hour before expiration of time for a move!  I do not know when the tournament will be finished now, I lost any hope to play normally. My opponent with a low rating (<1700) is a "Premium Member" from Florida, USA.