@Riot, just started playing again and my account is permabanned?

I haven't been on League in about a week, been busy with school and my studies. So today I finally logged on after awhile and realize my account is permabanned.

I don't even know what to say, but I can tell you that my password wasn't changed, my name wasn't changed, and I can also tell you I fount malicious software on my computer after doing a quick virus scan which I suspect was a key logger. I have created a support ticket so any ways I can prove that it hasn't been me playing for the past few days would be helpful all though I know pointless. All I can say is that the champions played for the last few days on my account are champions I almost never play or pretty much haven't been playing this season (Singed, Ekko - I play Xin, Jax). I have been banned in the past for offensive behavior before, I believe a month prior but I'm not sure so this is totally stressing me out that my last ban is not even my fault.

Any help is appreciated all though I know it's futile, I mean who hacks an account and doesn't change anything?