What match was it? It helps to know the actual game so you could see if there were any special time conditions.
Most the games you have played recently have a 15 10 time control. Do you know that means that each player gets their time extended by 10 seconds for every move they complete?
I have recently joined chess.com. In one of the online matches I saw that the opponent had only 30 seconds left and suddenly he got another a min and a half. This was going on in the entire game. Has anyone else felt the issue with clock.