"Refer a friend" not linking up

Q u o t e:
I referred a friend and he accepted and started his 10 day trial using the email I sent him. He is not linked to me and I to him. He did it the way the email instructed. What am I to do?

Are you certain that he created the account using the Authentication Key contained within the invitation?

Q u o t e:
Post a name and realm of a character on each account and a GM here may be able to assist if they have time.

Yes, please. This would help greatly.

I'm afraid that account you've mentioned was not created using the Recruit-a-Friend key contained within the invitation sent via e-mail. Accordingly, you will need to contact our Billing Department to have this account linked to your own. They can be reached using one of the following numbers:

Billing and Account Services

Live Representatives are available every day from 8:00 AM to 8:00 PM PDT
For phone assistance please call: 1 (800) 592-5499 || 1 (800) 59-BLIZZARD

• 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