I've received an e-mail from Blizz saying that I've been assigned a specialist in my case, and he/she'll be contacting me via e-mail with the results of his investigation. My account's password was reset (and lo, I changed it yet again within a week). They also gave me the standard they'll do their best to restore my stuff and whatnot.
So, at least I've got a little acknowledgment that my ticket has been received. I have time now to read plenty of WoW blogs while I wait, I suppose.