If you believe your ban was a mistake, you should always handle the appeal yourself. Using the Submit a Ticket page on the Valorant Support site is the only official path. How to Get Unbanned from Valorant - PureVPN

: These are more transparent. They charge to write a "professionally drafted" or "legally sound" appeal letter for you to submit to Riot Games.

: Claiming knowledge of exactly what Riot's support agents want to hear to grant a second chance.