I did this a few years ago before there were actual options on the website, and I did actually have someone visit me. I flat out refused to let them in, but then I made sure it was absolutely clear I wasn't using the TV (unplugged the cable box, put it away, took away any old-style aerials), and when they came back a few weeks later, I let them look and they agreed it was ok.
However, now Netflix etc is more popular, and the option easier online, I think more and more people are doing this, and they can no longer actually afford to arrange visits to check.