Bullied by premades - the darker side of DQ

I'm not really sure what to do about this, but it's rather tilting to experience this on multiple occasions this week. I was wondering if other people have had this happen to them to and I'd like to hear what they did. Today I played a match where I made the completely constructive comment that our Lulu support might be better served grouping with our team during fights instead of going off solo to which I was served the following threat

"Be careful Twitch, you're playing with a 4-man premade. No one is going to agree with you."

That teammate continued to push and threaten the entire game but I had no method of recourse other than a lone report which could easily be countered by 4 reports sent my way by their group.

That'd honestly be fine if it hadn't happened to me three other times this week. I understand that's incredibly unlucky but without a Tribunal for arbitration, I, the one being "bullied" (for lack of a less wimpy sounding word), am actually framed as the bad guy because of the toxic experience Dynamic Queue creates for new players.

Maybe I'm just being a bitch, but it seems like there will likely be no recourse for that person completely ruining 40 minutes of my night. I'm done venting my experience, let me know if this has happened to you guys so maybe I don't feel like the only one :P