A shuttle company I had not paid called me

That's creepy. I wonder if it was a shared-dispatch-confusion thing, or an attempt to steal you as a customer, or if the airline has some deal with certain shuttle companies to share info.... That's truly odd.

You're a much calmer traveler than I, apparently.

I did thing of the dispatch mix-up, but when I asked the called, they claimed to never have heard of my shuttle company.

As for the calmness--it's a choice. I know that if I'd just pay some attention to what I'm doing, these things would go a lot more smoothly, but I choose not to. I accept that a price has to be paid for wandering through life, thinking about something else, and occasional confusion, and even consternation, is the price I pay.