If u didn't authorize the change, do ur self a favor and file a law suit. AT&T has been sued and lost or settled out of court a ton of times for crap like this in their past. I realized right when the family data plan came in to effect after upgrading my phone how their sales staff was trained to manipulate customers out of their grandfather plans. If they changed u without permission sue, because I'm in a different boat where I have four lines grandfathered in and my line is not, I'm on the five gig plan and they rape me for 175 dollars a month in data because they won't offer a plan above 5 gigs, they just charge me an additional ten dollars a gig after the fact. Sue them bro, get free service for life