They Call, then Hang Up so you call them back to see who it is. Once you do that you can not add them to the "Do Not Call Registry" because YOU called THEM. It's a new scam way of Calling so they can't get put on the List.
Total scam spam reverse marketing don't fall for it. If it is important a place will call back or leave a message.Once you call them back, you cannot request they do not call you because by law you have initiated the call.
unidentified calls and when I block them I get a call from another number as this pharmacy telemarketer gets new cell numbers all the time from around the country.