My LoL Account Was Banned by Vanguard for No Reason

I started playing League of Legends when Draven was a new champion – I can't even remember how long ago that was! For the past six years, I've only played ARAM. Yet, my account has been banned by Vanguard for no reason, despite me not using any unauthorized software.

I immediately opened a support ticket regarding this, but I've received no solution or even a response whatsoever. The amount of money I've poured into this game is immeasurable, and I won't even start on the time I've invested. This is completely unacceptable for a loyal, long-time player.

Riot Games, you need to lift this unjust Vanguard ban on my League of Legends account immediately! This is an arbitrary restriction preventing me from accessing a game I've dedicated years to. Provide a clear explanation and restore my access now!