If an order has been pending for a long time, you should contact your AT&T Account Team or the AT&T Worldwide Customer Service Center at 1-800-358-1111, prompt 2 then 5.

I placed an online order for AT&T Business Network (ABN) switched voice service and it has been pending for a long time. What should I do?
If an order has been pending for a long time, you should contact your AT&T Account Team or the AT&T Worldwide Customer Service Center at 1-800-358-1111, prompt 2 then 5.