Finding how to contact Microsoft for support can be a daunting task. Start with this link: Email, Chat or Phone Microsoft support or use one of the phone numbers below:
Contact Microsoft Customer Service by Phone for support:
Weekdays 5 A.M. – 9 P.M. (Pacific Time)
Weekends 6 A.M. – 3 P.M. (Pacific Time)
Having trouble with activation?
Office Installation and Activation Support (800) 936-5700
Still need help, ask on Microsoft . . .
Continue Reading: How to contact Microsoft for help