I opened the door, determined that he was not the FedEx guy I was waiting for, said I was not interested. He said he was not selling anything. I asked him to leave and he would not, just kept talking, so I closed the door when it became clear that he would not stop talking, and asked him to leave immediately. He then waited a minute or two and began to knock/pound on the door, shouting that he just wanted to talk. I locked the door and texted my neighbor to warn her. Wish I had called the sheriff when he did not leave my property.