They really aren't. 500 million sounds like a lot, but it is very unlikely any call by anyone in your family is caught in this net. As someone pointed out, with 250 million people owning phones in this country, as well as vast networks of systematic and/or automated calling, the portion of calls actually being tracked here is pretty tiny.

It's also a situation where having useless data costs next to nothing (economically at least, philosophically is a different debate), but missing even a small detail could be critical.