Call came in on my wife's new smart phone. She blocked it. I called back on the house phone and got message: "We're sorry, your call did not go through. Please try your call again."
So I called again and got the same message. Now I'm going to report it to the call blocking service we use for the house phone.
BTW I've seen indications that the telemarketers check 800 notes. If you are one of them, here's a suggestion: When you make up a new spoofed phone number, do not call any numbers in the 562 area code that have 8 as the last digit. The call blocker will shut you down right away if you hit mine. Ha ha ha!