It wasn't that long ago that AT&T Wireless went belly up and was bought by Cingular. All us AT&T customers had the jump through crazy hoops to get registered on the new website and the bills at the beginning of the changeover just didn't make any sense. I was relieved when it was finally worked out.
I just heard a commercial during the Golden Globes that Cingular is now going to change its name to...AT&T! Argghhh! Now I'm going to have to deal with the changeover all over again.