Phone company closed on Sundays: After trying the various phone numbers on the AT&T Wireless site, including 1-800-331-0500, 611 from my cellphone, and 800‑288‑2747 from GetHuman.com, it seems that AT&T provides no customer service on Sunday. So, if your phone or their software is broken, you are SOL. (Via Joho the Blog.)
It's not just Wireless. I tried to get service Friday evening for the Palo Alto townhouse I'm moving into. The at&t/SBC site led me through a long set of choices, just to dump me at checkout because of "extended maintenance." Tried again yesterday. Another problem cropped up, an option I had selected on Friday was no longer available. And I was dumped at checkout again. And many other mis/malfuctions. No phone number to buy service. This is what an unregulated monopoly is like.