Account was banned for scripting but looks like it was hacked by someone else

I was just playing an ARAM as Sylas. I got up from the computer and came back to a message about an action being taken against my account and to log back in. I did that and it popped up with a message saying the account was banned for scripting. I checked my match history (which I tried to link above) and it shows someone playing SR games from 6/4 and 6/5. If you look at the other games, its mostly just ARAM as thats what I play. Anyways, I submitted a ticket but based on what I've been reading, it sounds like it may not be helpful. Is there a way Riot can look at the IP address that were used for the SR games and it should show that its coming from a different IP. I'm guessing someone must have gotten a hold of my account information. Please, is there anything that can be done as I don't really want to lose my account, especially for something like this.