Is there any other way to get unteambanned, I have tried to get into a lobby where there is an admin but with no luck. Maybe a voice recording or smth?

Username: SamSamual What is your type of punishment? Team Ban Where were you banned from? Servers What is your SteamID? STEAM_0:0:459758052 Who has punished you? 10000 Cold Knights (STEAM_0:1:14517728) Why were you punished? (Reason) no mic Why should we revoke your punishment...