Because people might get the wrong idea about Dish that these calls are common. They are not. Me, my brother, and my parents, all Dish customers, have never gotten calls. Dish deserves a fair shake, and since the vitriol was getting extreme, with no one explaining the purpose of the calls, I though Dish deserved a defender. And whining about, as you admit, not a huge deal, is a pet peeve of mine.
As the OP said, one of his 211s was apparently not calling in. A lot of people have some receivers hooked up, but not others, and that is probably a red flag. Heck, think about it, is some are hooked up to the phone and others to the net, that also is probably a red flag.
Can't your family take care of the audit while you are gone? All it involves is tuning to a channel and reading back some info.
And Zillow is hardly accurate. And even so, just because your house has a lot of bedrooms does not mean you can't account stack. Zillow once says my house has 3 bedrooms, and I get by on one receiver.
As Ice says, if you have receivers in different locations, you are screwed. And, if that is the case, things are far from being on the "up and up" but you are guilty of stacking. It would only be legal if you commuted with your receivers.