My account seems to be banned

Dear Nostalrius Support
Today I was killing some demons at Felfire Hill (Ashenvale) with my level 30 warlock, nearly hitting level 31, when suddenly I was disconnected from the game.
I tried to relog, but it said that the account was closed. Can you please help me with this?
The name of my warlock is Merul.
Thank you for you help.
Today I was killing some demons at Felfire Hill (Ashenvale) with my level 30 warlock, nearly hitting level 31, when suddenly I was disconnected from the game.
I tried to relog, but it said that the account was closed. Can you please help me with this?
The name of my warlock is Merul.
Thank you for you help.