I have a WoW account, but have lost access to the email address?

I'm trying to log into WoW, but I can't. They are saying I need a Battlenet account. So I went to create one, but it says my WoW account is already merged with another Battlenet account, which is impossible, because I never created one in the past. My old email has been changed since then, so I cannot use the email address my WoW acc is assigned to, because they will send a confirmation email to it, and I won't be able to access it. Like wtf, this really pisses me off, I just want to play the game and stupid shii is preventing me from doing so. Help please