I'd say, create a new account and log on to discovery with a new character name. Adfvise Admins of that character name and they shgould be able to restore your character names to that account (provided proof has been provided) and delete that new account character. This could be pretty labor intensive so try not to bug the busy admins again for a trivial matter like this.
Also, this time write your Account info down on a piece of paper, or better yet get it tattooed.