My experience with TWC has been pretty good. Service has been reliable, when it did go down they gave me a credit, and when I had a local wiring issue they had someone out within 24 hrs.
AT&T on the other hand is a criminal organization. I'm sure some lawyer would redefine them simply as grossly negligent, but there's a point where incompetence reaches such ridiculous levels it has to be criminal. We spend $30,000 a month with AT&T at work and it's just as bad, if not worse than their consumer customer service. I've spent years in endless back and forth trying to get refunds for erroneous charges, and even when they do admit they are in the wrong, it takes months to get your money back. If you have an outage, expect to spend four hours before you can even reach someone to fix it. If I ever go suicide bomber, AT&T is my first stop.