I have a sure-fired way to reduce unwanted and programmed calls on my phone.
Do you want to hear it?
OK - I answer enthusiastically -really enthusiastically, just like a recording,
"Gooooooood afternoon! This is Tom Sims of the Sims ressssss-i-dence. I hope you're having a great day. How are things where you are?"
If there has not been a click by then, I start singing something like, "It's a beautiful day in the neighborhood ...." and making up words like .... "Won't you speak to me-ee."
Computer dialing systems are designed to filter out computer answering systems and if they think you are one, they will hang up.
Real people will laugh and wait.
Here is an example: