Xfinity caller id issue

How can I get some assistance for my caller id issue.  I’ve put in several tickets and the tier 1 techs all do the same troubleshooting, without a different resolution, (reboot the modem, remotely check the TV and banner on a simulated call, make test calls, repeat) and then say my issue has been passed up to the Advanced Repair team.  Nothing is fixed.  

My issues are the following:  

1. All Calls on my phone system come through on the caller id;  “Unknown Name --- Private Number”.  

2. There is no caller id notification on any of my tvs, even though all of the settings are correct.  

I read on a forum that something related to my account needs to be rebuilt.  I transferred my services from a rental home in March, and since then the above has not worked.  I need help to get this resolved, can you assist?