Hello
,
I'm sorry you're having some issues with one of your lines. I've seen it before and our porting department and tech support were able to resolve it. It's been a while, but if I'm remembering it correctly, it had something to do with the number not being fully ported, possible because of some information mismatch between AT&T's and T-Mobile's systems.
With that said, out team will be happy to help you with that! Please send us a private message by clicking here. Please include your full name, phone number, account number and the best time you can be reached.
Thank you,
Dmitriy