Transfer Pin

I have been trying to get a transfer pin for over a week now, it keeps saying it was sent to my mobile number but I never receive it.  I need to change my cellular provider Xfinity's coverage is awful, I can't make a phone call inside my house without the call being dropped or the  caller can't hear me, it takes a good 3 minutes for the call to connect and if I am not on my home wifi I have not wifi on my phone.   Forget trying to use it outside of my home especially my GPS.   I feel like they hold you hostage by not sending the PIN that has been requested.  I have talked to Customer Service numerous times and gone through tons of steps to try and fix the issue but it still remains a problem.  The agent yesterday even had me delete my SIM and put a new on on and the problem persists.   Is there a reason that I can't have the transfer pin sent to my  email?  I am not able to make it into an Xfinity Store by the time I get done work they are already closed.   It really should not be this difficult to get a simple transfer pin.  Any suggestions?