Someone stopped me in my driveway a few months ago while was unloading groceries from my car. He said he was from Comcast
(our local cable company) & walked toward my front door (I had my arm around grocery bags and my housekeys keys in my other hand).
He asked if I was a current subscriber to Comcast, and I made a joke. All I said was "if you're FROM Comcast, wouldn't you know if I HAD Comcast?" I was kidding, making small-talk. I didnt think for a second that he wasn't legit.
But he looked at me, looked around and backed up and walked back down the driveway and down the street.
I went inside the house and called Comcast and asked about door-to-door salespeople in my neighbrohood and they said they didn't have any scheduled & to call the police immediately.
I did... not sure if they got him.
Taught me to be a little bit less trusting of people.