Perma ban without all offenses
So I was permanently banned after only receiving the 1st offense punishment form Riot, which was I believe 6 months to a year ago, I'm not sure. I was having a bad day in general with college and stress from home, so I guess I was already on edge when I went to play a match. I was getting camped mid, and 3 man ganked, and needless to say, I wasn't very happy. I said some pretty awful things in all chat, like extremely bad, since I was so riled up, and the enemies' reaction to that was "U make my day" and more ganks, naturally. Late game though, my team won, and they weren't too happy losing to someone as mad as I was, so they reported me.
After that game, me and my friends get into another game that we eventually lose. When I came out of the game, I was notified that I was permanently suspended.
I was mortified. I have spent over 2000 hours and $1000 dollars on this game (which I know doesn't really matter), and I don't want to lose it all, especially since it's the last connection I have with some friends from high school.
I sent in a support ticket, and I could tell that the guy whom I talked to just wanted to get me out of the way, since what he said just looked like something a machine would spit out.
Do I have a chance of getting my account back? Like I said before I only had 1 offense prior to this.