Same happened to me. Kept talking over me. When I told him I'm on the donotcall list, he hung up on me. Doesn't work to call back - number not in service.
Same as above. I asked him for his contractor's license number, and he said he wasn't allowed to. I told him that state law says you're supposed to and I'd tell him mine is he told me his. He asked if I was a contractor, and when I answered in the affirmative he hung up. I love wasting their time. I figure the longer I can keep them on the phone, the more folks I save from his call.