[firstmate]

The "being alone" in the house is the key. As a woman, I would never open a door to someone I did not know, day or night. It is just simply not worth it. If I decide I need to buy something, I will go out and find it or call someone who sells it. They sure don't need to come to my house to push it on me.

I think you did the right thing, even too much almost, by opening the door and giving them several warnings. One warning should have been enough, and the second statement out of my mouth would have been: You had your warning, I am calling the police!!! Anyway I would NOT say you are paranoid, just cautious, and there is nothing wrong with that!!!