If you actually, genuinelly, own the accounts and you just used fictitious names then I'd give the Blizzard accounts department a call.

I can't remember the details, but there's something rattling round the back of my head that somebody here successfully got the information updated under similar circumstances some time ago.

They'll at least be able to tell you if anything can be done.

If you draw a blank then you're better off getting new accounts - it's only a matter of time before you get the "reported!!11eleventyone" whisper and a nice GM comes to look at you.

Either way, it's best to tackle it head on rather than keep your head down and hope for the best