I just have been receiving calls with no answer when my machine picks--I screen my calls,and listen for who is calling, but once my machine answers, they hang up. Interestingly, I began receiving hangup calls on my cell from another scam 767 code--so think one of these companies I have done business with has been hacked. Until the last couple of wks, I never got unwanted calls on my cell--can't be a coincidence, and have blocked them--but I would never return a call from a number/person I don't know, and don't owe anyone money. So they are wasting their time with me..