Eaten by a 3000 mass bot. Why? Just Why?

I dont have a screenshot because I didnt expect it to happen but there were 2 bots from <put name here> that were 3160 and 3015 mass respectively and they teamed up with someone I was about to eat, getting him from 500 mass to 6500 mass and I was eaten. I am outraged! The problem is worse, not better!