You have left three times and got disconnected/plug once plus this one, I consider that an enough bad banhistory for not unbanning you.
Furthermore I must tell you one thing, from now on you'd better not get disconnected, disregard the fact that you get truly disconnected because even so you are ruining games and that's something I can't tolerate.
If your connection is not stable enough to play in EDHLRs just don't play here or face the consequences.
Denied.