I have been perma-banned

So about a month ago my pc started experiencing some problems which led to me not being able to use it at all.Today i thought i'd play a game of league of legends only thing is when i tried to log in a message popped up informing me that i have been perma banned for the use of third party programs.I have never used any third party programs nor do i intent to even more i can't even access my computer.I have been playing league since season 1 and i have spent a lot of money on it.I scrolled the forums after i sent a ticket to the support and saw that most people that got banned for the use of third party programs and haven't done anything didn't get their account back.Is there anything i can do to get my account back?
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