I got a call from this number yesterday and I answered it because I thought it was a call I had been expecting.  The first thing I heard was a recorded voice which said if I didn't want to receive any more calls from this number I should press one.  I did that because although I am very careful not to press anything during a spam call I had never gotten that message before.  Then the voice said it might take some time to process my request. I don't know what will happen now.  Hope I haven't opened the door to more spam instead of less.