Besides, if you're bored of the leveling process, just join any of the communities called "powerleveling" or "boost" or something like that (there's multiple of them) and ask for a level 1-70 boost. You'll be 70 in 15 minutes.
Not sure how you "lost your character". Are you playing hardcore and your character died? In that case it's gone, hardcore characters are not revived. If you're having game issues, please refer to the official forums. We're a fan site and have no means to access your account.