I remember when AT&T wireless existed, and then AT&T and another company formed Cingular, so in effect AT&T was competing against itself, then it bought itself.
Not sure... I have been using at&t for 10 years or so and average about one dropped call every 6 months. I think it really just depends on the area you are in. The are I am in has better service with at&t than anything else. My company phone is Verizon is drops more calls than my at&t phone. I'm sure people will have the opposite opinion as well.