You cannot beat those trolls by cooperating (trying to get a win when they slow-play). When you do that, you are giving them the satisfaction that they beat you. They may not have beaten you in the 'who got the recorded win in the database' battle, but they have beaten you in the 'who got to enjoy the game time better' battle. The latter is what they want, not the former.
In addition, once they are identified, their (free) accounts are banned and their rated games invalidated. So if you resign and blacklist them, you will haven beaten them in both battles. The latter (time enjoyment) immediatly, and the former (database win) later. The bad experience will be short and have no rating consequences.