Sales via shoe leather

I was ambushed. My son, Ben (15), got out of track practice at 4:45 yesterday afternoon. My car was parked in the street, and as I was walking from my front door to the car... A stranger jumped out of nowhere. He was an older gentleman in a full suit...but wearing a baseball cap. Odd combo. I physically recoiled and continued to my car. He closed in. We made eye contact. I was clearly in a rush. "CAN I GIVE YOU MY CARD???" he exclaimed. "Uhhh.....for what?" I replied nervously. He got closer...