Last month my AT&T bill had $220 in usage fees. I was shocked because I've never (in more than 10 years) exceeded my allotment of minutes. Turns out the reason for the charges is that I do not have unlimited mobile-to-mobile calls (m2m). I have a legacy plan that existed before the m2m was given to everyone. AT&T advertises that all their plans now have m2m so we started using our cell phones to call each other. These calls were all to/from 2 people that do have this plan or between the phones on my plan. I called... read full review »