

Thank you, as I tried to allude to in other comments, I am open to learning and as I’ve aged I have less ego.
I appreciate your feedback on writing and I am going to put this down to a lesson of the perils of overthinking (not just writing words myself).
For those on iOS you don’t need an app to do this.
You can go to settings -> apps -> phone -> silence unknown callers.
This will send them straight to voicemail and the call will show in the recent calls list.