Caller ID not working on landline phone or on television since plan change

At the suggestion of an Xfinity Chat Agent that I was chatting with on an unrelated issue, I upgraded to a new plan for my TV, Phone, and Internet.  The upgrade required me to install the new white Xfi Gateway.  I previously had the older black Xfi Gateway.  The new plan was only $10 more expensive than my current plan, but was supposed to provide 1.2 gigabyte per second Internet.  I was on the 500MB plan before.  I have literally seen no upgrade in speed, and as a terrible bonus, my Caller ID no longer works on either my landline phone or on television.   Now every Incoming call shows Out of Area Private Caller.  No matter who is calling, and these are numbers that worked fine up until two weeks ago when my plan changed.  I also pay $10 extra per month for what is supposed to be double the DVR space.  Since the "upgrade" only my bedroom television has the correct DVR full %.  Both my living room and other bedroom show a much higher % full.   I have chatted with about 10 different Chat Agents, and spoke to two people who were allegedly Tier 2 support.  Despite being assured about 50 times that they "valued my loyalty to Xfinity" and would correct my problem, all that managed to happen is that they reset my gateway and television boxes over and over and over, and the problem is still here.  I am on the verge of demanding to be let out of my contract, so that I can go to a provider that can provide Caller ID.  I have seen others on here get assistance and get this same issue fixed.  Can someone please reach out to help me???