A lady called and said "Hi, I am calling from United Heath care. We are offering to provide you with a free health quote..." She then asked for my address, my name, date of birth, medications I am on, etc. I asked to be removed from their calling list. She politely assured me that she would.
I get 2 calls a day from this number. I never answer because I do not know who is calling. If I don't recognize the number it doesn't get answered. I would never purchase anything from anyone over the phone or give out personal information.