You deserved the ban Nubrac. This isn't a single player rpg. Your actions influence and affect other peoples game as well.
By roaming mid and doing whatever you wanted, seeing that your team was unhappy with this behavior, and still doing it anyway, you were in-fact being toxic.
The fact that this whole issue has blown up, just because people hate nightblue3 is ridiculous.
You were queued as a support, and you did nothing to support. You know how this game works. Stop playing the victim, and finish out your ban.
Honestly, this dude seems like he's just dramatizing this entire situation and relishing in all of the attention from the sudden fame he's acquired on twitch, because he name dropped a big streamer.