#3 - Sept. 4, 2010, 4:14 p.m.
If the email address was changed on the account, Purekill, your friend will need to contact Account Services by phone to address the issue and update the information.
Account Services
Assists with: billing issues, password recovery, paid services, subscriptions, payment issues, account management, etc
Hours: 7 AM to 8 PM Pacific Time
How to contact:
Contact page:
http://us.blizzard.com/support/article/contactbilling
International contact page:
http://us.blizzard.com/support/article/international
Before he contacts them, he will want to make sure his computer is secure, and he may wish to consider creating a new email address rather than using the one that was on the account. The link provided by Agonist will supply your friend with the information he needs to move forward.