Same experience as others. I don't usually answer calls if I don't recognize the number but did today. Woman asked my name. I asked who was calling and she said very aggressively "shut the ...up'".
I've just gotten in the habit of not answering calls I don't have, especially area codes that I don't recognize. This number has dialed many times, I have just blocked it. My life is no worse for wear. If you have an iphone or other smartphone, just block it.