I had transferred the billing rights to myself after discussing with AT&T how my main concern was not losing my grandfathered unlimited data. They said I could transfer it with no problem and keep the plan. Simple enough, I have the same contract, number, and phone-- seems to make sense. Now they're trying to say it is impossible for me to get back, but I know of people who have done it very recently. I'd like some advice or perhaps suggestions on better carriers.