#1 - July 26, 2010, 6:07 a.m.
This is something you are going to need to take up with Billing to get back into control of this account, Tykku.
In a case like this, documentation will very likely be required. They can tell you what, if any, is needed to confirm you are the account holder.
Billing and Account Services
Phone Support - 1 (800) 59-BLIZZ (1 (800) 592 5499)
Live Representatives Available 7 days a week, 7am to 8pm Pacific Time
E-mail Support - Billing@Blizzard.com
Players in Australia should call 1-800-041-378
Players in Singapore should call 800-2549-9273
Players in Chile should call 1230-020-5554
Players in Mexico should call 001-888-578-7628
Players in Argentina should call 0800-333-0778
All other international players should call: (949) 955-0283