The B R Interviewing Co. called and when I picked up the phone they hung up.

The B R Interviewing Co. called and when I picked up the phone they hung up, I called them back to 5 times and finally got through the busty signal to tell them that I am on a do-not-call list and that I wanted my number removed. I do not trust that they will honor my request, so I want to complain to someone who will actually do something about the annoying phone calls!