Unactivated NOW enrollment blocking Xfinity Mobile

I started a NOW Mobile enrollment but never activated service. Xfinity representatives say my phone number and device IMEI remain associated with NOW, preventing enrollment in Xfinity Mobile. The NOW chat menus haven’t connected me with someone who can resolve this. I'm not able to get to the right support because this unique experience isn't in any of the menus, it keeps kicking me out of the chat . 

Please escalate for review of the unfinished enrollment and release or correct the device association. I need to retain my phone number. Please do not cancel or port anything without confirming with me first.