Have you encountered a man selling books door to door?

A young man came to my home yesterday while my oldest son was home alone. My son didn’t go to the door but he did manage to get the make and color of the car. This man came again before lunch yesterday. He came up my driveway driving at least 30 mph, ran to the door, banged on it, all the while talking to himself, shaking, and dancing around. I am a stay at home mom and I never open the door for anyone while I am home with children alone.