Do you help strangers in need?

10:00 at night i was feeding the baby in the living room, when i heard the screen door unlatch. The dog began to bark as a knock at the door persued. I open the door to find a older man standing on my porch. He began to reach for the handel of the the screen door, with what seemed to be intent to open it, while telling me his car broke down and he didnt have his phone. I grabbed the door pulling it quickly shut. I told him to wait and i closed the steel door and locked it. i woke my boyfriend to have him handel the situation but i had a very unsettling feeling. I live in a 2 story house. I have 2 doors main entrance doors on the frist floor, and in the back yard i have a staircase leading to another door. The man walked all the way around the house passing 1 door and Up the steps.