How can I block a specific phone number from calling my SBC/AT&T landline?

I'm tired of recieved calls at all hours of the day from this person.
Answer: there are only 2 ways to do it...call your phone provider, or buy a little gizmo where you can block the numbers yourself...

http://www.privacycorps.com/

you can program all the number only you wanna come to you...all others go directly to you voice mail, or in the trashcan...you decide!