.......................
I also add unsolicited calls to my blocked numbers listing.
It is almost a waste of time to do that.
Most unsolicited calls use caller ID spoofed numbers that don't exist. Have you ever wondered why you sometimes get calls from an unknown number that have no voice and disconnect almost immediately? Most likely they are "ping" calls that are computer generated and dialling every number in a sequence to build up a database of used and unused numbers.
The spam callers then use the unused numbers to "spoof" the caller ID. As soon as they find that a number starts to be rejected they switch to another number. Since they have thousands, if not millions, of unused numbers to use you can never block them all.
Almost every day, if not several times in a day, we get calls with the same recorded message, so from the same spammer, but they are always from a different spoofed number. On very rare occasions we get more than one call from the same spoofed number.
Occasionally you can hear sounds in the background that would seem to indicate that even though it is a computer generated call with a recorded message there is an operator that has left a microphone open. I will not repeat what we shout down the line
