Phone screening is simple - only answer the landline (if you have one) if you recognise the number on caller display.
Set the mobile to only ring if the number is in your contact list.
If it’s important or genuine, they will leave a message.
Simple as that - no excuses.
That would stop all the fun though!
I actually took the phone out of the study during redecoration a few months back and have not put it back in yet. I don't seem to be missing it and all my friends only use my mobile anyway. Going to cancel the landline (but keep the broadband)