CableCard Still Not Working after 3 Visits

I have been having an extreme amount of trouble with CableCard connecting with my Tivo HD.

The problem occurring during all three technician visits has been that I receive some channels (up to Channel 24, then some in the 200-range). From TiVO's end, it says the card has not been paired.

My first appointment was early September. The technician tried to install the Multistream card. They decided it was faulty. The second appointment was mid-September. The technician again tried to install the card. It didn't work, and the story this time was that then told me something was wrong in my area with cable. (Also, please note that this technician made offensive, racially derogatory marks about his co-workers.) Both of these reasons for the Cable Card not working seemed to be reasons given because no one wanted to deal with it.

The third appointment, no one showed up.

Today was the fourth appointment. They brought a few Multistreams to make sure it wasn't a faulty card. Again, same problem with not receiving all of the channels.

When the supervisor left today, he told me they were putting a ticket in and it would be fixed in 24 hours. I then called Comcast technical support to see what the deal was. The person there said he has never seen a multistream card work, that I would need to get 2 single streams. He was getting a "failed" message. He informed me there was no one at Comcast who could figure out how to fix the problem, no one to transfer me to that could resolve the issue.