I did what Linda did and called them back. An automated voice said to be put on the do not call list, press one. I did so and then it asked for my 10-digit phone number. Nothing else. No confirmation voice. Nothing.
Got a call for a person calling himself Omar and wanted to ask a few question that wouldn't take up much of my time. I simply said I was on a no call list to asked that he not call again and I hung up.
I had missed this call and called it back via caller ID. It was a recording asking if I wanted to be put on the no call list to put in my 10 digit phone number.
I did what Linda did and called them back. An automated voice said to be put on the do not call list, press one. I did so and then it asked for my 10-digit phone number. Nothing else. No confirmation voice. Nothing.