Maybe some people use their phones differently from the way I do (no! could it be??), but if I see "Unknown" or an unrecognizable number on my screen, I hit the Ignore button. That's all I have to do. I should be grateful to them for making me get the thumb exercise, don't you think? Or am I likely to develop repetitive stress injuries from repeatedly not answering my phone?
I don't get the furor.