Need Help, Banned for No Reason

Hello, fellow summoners. As I was about to play an ARAM game with my brother, I've found out that my account has been permanently suspended. I am utterly confused. Worst of it all, I didn't even receive an email as to why I was banned, I'm just left in the dark. Before you get your pitch forks out, let me explain

• I have not downloaded ANY kind of third party software
• I haven't been behaviorally restricted/punished by the tribunal
• I haven't done anything to violate Riot Games Terms of Service

Although I understand that it is within Riot Game's rights to suspend my account for any reason, is there any reason why I'm permanently suspended? By the way, I always play COOP vs AI for a quick first win of the day, and I do encounter "bots", (who doesn't talk/run identical summoner spells) on my team sometimes. Did Riot make a mistake and banned my account on accident? Please help. THANK YOU!