I am calling about the problems you are having with your computer
I just had one of those phone calls about the problems with my computer (they’ve been increasing recently).
I lied. “I don’t have a computer,” I told her.
“Yes, this is about the problems you are having with it.”
“I don’t have a computer,” I repeated.
“But you do have broadband.”
The tone in her voice had changed. She was guessing that I had a computer because she knew that I had broadband.
How did she know that? Is it common knowledge available to anyone? Is it obtained nefariously? Or do our ISPs sell their customer lists?