@apostolateofDOOM I get them in DM from time to time. Depending on how rude they are, I either try and calm them down or just ignore it. Most of the time I just ignore it. The ones that make me scratch my head, they yell at me.. Then invite me to game with them.
The funny ones are when you get a DM from an enemy you've killed.. They tell you, you are not that good.. Then proceed to tell you, you cheat. My typical response is, okay commander conundrum.
Sometimes they are cool about it though, I had one who thought I was playing Duos with a second squad. I was not, that's not something I would do. I actually clipped the fight and sent him a video of it. I just happened to be solo and was trying to steal kills with a sniper to keep my K/D decent. He assumed I was playing with the enemy squad because I did not immediately engage them once his team died. I just waited for a third party to attack that squad.. Then started taking shots again. But I was not working with anyone.