Pay TV, Internet and wireless service providers aren’t exactly America’s most beloved business categories. In fact, customers seem to love complaining about them constantly, and T-Mobile has found tremendous success by separating its practices from those of its rivals and portraying itself as the “Uncarrier.” Part of the reason people dislike wireless carriers and ISPs so much may be the difficulties they often experience when dealing with their customer care departments, and now ATT and Time Warner Cable have been ranked Nos. 1 and 2 in a survey asking subscribers which companies have the worst customer service in the country. The survey, conducted by Ranker and unearthed by DSLReports.com, lists 50 large U.S. companies and asks visitors to vote on