For information about your Microsoft account, call 0800 633 5916 8:00 A.M. to 6 P.M. Monday through Saturday, or email a support agent.
For information about your Yahoo! account, call 0800 1699740 9:00 A.M. to 5:30 P.M. Monday through Friday, or email a support agent.
For general inquiries about the Yahoo! and Microsoft Search Alliance, you may contact either support team. | 
