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Hi bhg 481. I think you are saying that you can block a number that has been withheld? Grasscarp, you are right that you will not know their number although one of these consumer group pests did leave a number a couple of times, but now they do not. Doctors and hospitals and such do not leave numbers.
I also feel miffed that I am even considering changing my phone because of these xxxxxx nuisances - so I wont.
I like the sound of a whistle. My Mother told me that patience ( and tolerance ) was a virtue!!!!
Thank you all for your thoughts, it has helped me put it into perspective.