Cablecard nightmare

We recently moved from the East Coast to California and established ComCast service which required replacing the CableCard in our TiVO Bolt with a "new" card from ComCast.  Just getting the card was a hassle since the person on the phone told me to go to the store and the person in the store informed me that they no longer had them.  Two weeks ago, I Found a Comcast tech support person on "chat" who understood what I needed and one week later it arrives via UPS ground.  Last Friday I set it up with help from Comcast (requiring many more minutes of phone time) but the NEXT DAY it was not working properly. Basically it shows EST instead of PST and TiVO Guide sees the wrong channel lineup.  It is broadcasting but out of sync, not properly provisioned to us. 

Fast forward and since then I have:

* Spent 2-3 hours on the phone with Comcast mostly again and again establishing our credentials, once finding a helpful person who was "working on it" but whose call was suddenly dropped and several times finding helpful persons who told me they were transferring me to an expert but for whom the call was dropped instead.

* Spent 1 hour in chat which concluded with an appointment with a technician (which was this am)

* Was informed by technician (erroneously as it turned out) that our problem is that the cablecard works only wih Legacy and not X1 service and proceeded to change our service to Legacy only at the end to see that nothing was repaired even though he was at our house for ~2 hours.

PLEASE HELP US.  I can see from other posts on this forum that we are not the only people who have experienced this and also that this may have something to do with "provisioning", whatever that is.

Thanks -- L