#1 - Aug. 5, 2010, 9:27 a.m.
You can't but there have been 4 actually linked.
3 of those were to individuals with the same last name.
2 have expired, 2 have not.
If you need any further particulars, Billing may be able to help - but I won't be able to give out any more information myself.
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