Grand Theft Auto V Deathmatch: cheating with tanks?

So I'm playing team Grand Theft Auto V online team deathmatch when the opposing team starts to use tanks. Now my team was leading by using automatic weapons but against tanks it's no good. Eventually, one by one my team quit. You see there were no RPGs or sticky bombs to take on the tanks. Now either the other guys cheated or this is really a dumb map from Rockstar. My gut feeling is the other team cheated by using a tank cheat to spawn tanks. Rockstar got rid of the counterfeit cash which affected their bottom line. It's time for Rockstar to stop the other cheats that make the game unplayable for people who want to play by the rules of the game.