You have a couple of options. First, you can tymurn on auto-claim on time. The following tells you how to turn it off but you can use the reverse to turn it on.
https://support.chess.com/customer/en/portal/articles/1444854-how-can-i-prevent-getting-wins-based-on-timeouts-
Second, if there are less than 4 moves you should be able to abort, or resign, and neither player will lose rating. Unless it is a tourney game.
hola tengo una duda, estoy jugando ajedrez por correspondencia y pasa que algunos oponentes ya se les acabo el reloj y no pierden ni se acaba el juego por lo que tengo lleno de juegos sin jugar que puedo hacer? perderan?