Some of the 235 companies, organizations he surveyed such as Charter Communications, AT&T, Comcast, Verizon, Time Warner Cable and Cox Communications all ranked at the top of the list for worst customer service. See the (PDF) list below for more detailed results.
http://experiencematters.files.wordpress.com/2013/08/2103tcsr_companies.pdf
Turned out:
TV service providers deliver terrible customer service