How to get permabanned?

Hello everyone, I fought, answered 3 days questions from riot, to prove that Im owner of this account, but I lost. Also want to say, riot tell me, how can I remember things like my first 5 champions I bought, my first 3k, 4k, 6k ip champions bought, account creation date when this account is like 3 OR MORE OLD YEARS?? If I ask anyone of riot those guys, what did you ate maybe 2017-03-17? If you can't answer or don't know maybe then you're not you? So my account didn't get deleted, so how can i get perma banned through boards or smth? because I already deleted LoL, or maybe anyone want this account for free?

Have a good night.

Down vote more, thank you!