If you signed up for a low introductory offer, they may be able to do it. It will most likely depend on the contract you signed.
AT&T Contact info:
http://localization.att.com/loc/controller?wtSlotClick=1-006NWF-0-3&WT.svl=calltoaction&cdvn=landinglocalization&pid=1080&cookieResetted=true<ype=contactus
Answered Oct 21, 2011
Edited Oct 21, 2011