ok I just did it for caliga and it went suprisingly smooth
In a nutshell what I do is call blizz for you and change registered e-mail to your e-mail things I require to change e-mail is
First/last name on the account
secret answer
for my payment
I accept keys of any type
glider/WoW,tbc keys/ ONLY EXCEPTION IS WARHAMMER KEYS
paypal
scammed accounts
and also accounts or invites to certain websites but we will have to discuss that