You have to take into consideration that at really low elo, being very aggressive and making poor decisions which result in many deaths isn't usually intentional feeding, it's just what happens in really low elo.
Forgive them for sucking, and just play to the best of your ability; making inflammatory remarks just escalates an already bad situation. Even if they are intentionally ruining your match, it doesn't excuse your own behavior. The only person in the match you can control is you. Besides, intentional feeding is a punishable offense, but as I said, feeding is normal in Bronze MMR so it's hard to tell the difference.