Anyone mind explaining?

Alright so last wednesday i got banned for two weeks for "toxic behavior"

Now rewind to about 2 days earlier where i went up against of team, 3 of them from the looks of it were skyping and they are the type of team that i will admit are good and taunt you verbally, now i answered and got limited chat for 9 games. This is not my problem because i know i most likly should have just turned all chat off. Now fast foward 2 days later i had been on a winning streak with udyr jungle and i did phenomenal with tiger stance( i carried hard, besides the karthus ultis) now after that game they're team flamed in the lobby and i was like, ok thats fine they can have had sportsmanship I however gave my team likes and left. Now i go and grab something to eat and i come back and from what im interpreting they're whole team reported me this is very annoying for me to believe that even though i just got off a "toxic behavior" penalty i get another? And theres nothing i can do about it. I have nothing i can pleed because i for once did nothing wrong.