I spoke to the staff member who banned you. He told me that you RDA'd a user in an on-going sit and then you left the game to avoid punishment. On top of that, you had 13 recent punishments excluding the ban you just recieved. You really need to consider following the rules if you want to continue playing on the server. You should be lucky your ban is not longer because you have an extreme amount of punishments and it looks like you won't be following the rules.
When you get unbanned, please follow the rules or you will be banned for longer.
Do not appeal again, it will just get you in a worse position.