Re: food truck. If you paid with a CC that is probably how they got your number. If you use 2FA for the card they have your number.
Big Data, Big Brother
Forget privacy in this digital age. While looking online at an item on Crutchfield’s site, I called their customer service for more info. Without asking me any questions, the sales rep knew exactly which item and which webpage I was looking at. I’ve never done business with Crutchfield before - meaning they wouldn’t already have my info in their database. If marketing software can do this, just think what black hats can do. Pretty scary stuff.