You do realize it is against the ToS to sell your account. What with you not owning the characters and all that. Before you get into the obvious "But I pay money each month to play!!11!" let me stat that you are paying Blizzard to play the game, nothing more. If Blizzard came along and decided to delete all the characters on your character selection screen they can since it is technically their characters
. Call Blizzard up and explain to them what you did if you don't believe me, I am sure the person who will answer will get a kick out of explaining what I just said to you.
Anywho, to put it bluntly your old account is gone. Period. End of Story.
Edit: Dang-it CaptinXeith, you beat me to it! Edited, Nov 12th 2011 7:56pm by Criminy