League Of Legends Account Hacked, Email Changed Then Banned

I have been permanently banned from my League of Legends account on the EUW server today at around 4 pm Algeria time, even though I did not violate the rules and my account was hacked. My account name is “fearthealpha#7777”. While I was in a game mode (Brawl) playing Shaco, I suddenly received a Vanguard error, was disconnected from the game, and then logged out of my account. When I tried to log back in, I could not access my account because it was being used from another device. After this, I checked my Gmail and saw that my League of Legends account had been linked to another Gmail address without my permission. I did not authorize any email change, device change, or third-party access to my account. Shortly after this unauthorized access and email change, my account was permanently banned, even though I am the legitimate owner and was the victim of hacking. I have already submitted a ticket to Riot Games support explaining that my account was hacked and that the email was changed without my consent, but I have not yet received a response. I am very worried that my request might be denied and that I could lose my account forever for actions I did not commit. I kindly request that my account on EUW be thoroughly investigated, the hack and unauthorized email change be reviewed, and my account be unbanned and fully returned to me. I also request that my original Gmail remain permanently linked to the account, that the hacker’s access be completely and permanently removed and blocked, and that all possible security measures (such as restoring my original credentials and reviewing login history) be taken to prevent the hacker from ever entering my account again. I would like my account to be secured so that such a situation does not happen again.