I'm convinced that more and more call center hold systems are designed to make you hang up in frustration instead of actually having your questions answered.

Time Warner Cable's system presents two options when you first call: 1 and 3. But if you press zero, the unannounced option, suddely the door opens to a wide range of other options. Eventually, you get someone, and to Time Warner's credit, the representatives are generally courteous and competent.

AT&T Wireless is awful, however. The hold music is shrouded in persistent static that goes on and on for the life of the wait. This has to be deliberate (is it supposed to simulate the quality of cell phone connection you get with the company?). I think it's the ultimate irritation designed to make you hang up.