This morning I tried the AT&T landline and it finally works! Last night when I tried it, even after the status was changed to Order Completed, there was still no dial tone. However, now that the status had changed, I was now able to call AT&T Repairs 24/7 phone number. They were able to tell it wasn't working and said that we would be billed for any inside changes, but before 8AM this morning, the phone line was active.
This seems like a very complex process when you can activate a new cell phone within minutes. That said, I did want to thank Molly at @twitter/ATTCustomerCare, AT&T's Social Media Customer Care Guru. Molly you rock! And of course AT&T Executive Services (Thanks Eric!) Using Twitter for Customer Service, I had much better luck at finding an escalation path at AT&T then when calling the AT&T Customer Service Department!
This matter is now resolved!