[k7d]

Ok I'm feeling slightly stupid now but I couldn't locate dev support phone # anywhere http://developer.apple.com/support/

Also, I don't think it's very clever to make cheaper support channels (email) so bad that the only option is the phone support (which is much more resource intensive and costly). Even when you can afford it...

[k7d]

Ok turns out the support phone numbers were well hidden http://developer.apple.com/contact/phone.html

[microtonal]

It's linked right from the e-mail form that you probably used to contact them:

http://developer.apple.com/contact/

Also, Googling "apple developer call" gives proper entry points as the first and second results.