Teammates helping the other team win

I like to report an incident on warzone attack on sanctum. Everything was going find I was winning and about to win but many of my teammates helped the other team win by letting them capture all the bases and allowed them to take out the core. I need an investigation this is ridiculous and has cost me the game and my win loss stats. Awful just awful that loss should be erased I completely dominated and this bull crap happens come on. I had like three teammates out of 8 total players help the enemy team win and the other 4 quit for no reason.