I''ve been using att share value plan, but the signal is pretty weak in my new house. I went to their branch today but the manager refused to give me a microcell for free (really disappointed) and...
I've been due for a new phone for a couple of months ago so I thought I would wait and see what the 6 had to offer.
Time to move on.
It was nice while it lasted.
Perhaps CS didn't understand you? Just explain that you wish to port in a number to replace your current AT&T number. People do this all the time.
Apparently you will need a new SIM.
Use the Hangouts Dialer. It's works very well.