Ok - I've used the old phone and found a setting to allow numbers. So I've added the numbers that I know are blocked, but there's no list to show me which numbers are actually on the block list.
I guess I'll have to wait till any other people that are blocked for no reason let me know that they can't get through. I'm sure I read somewhere that the blocked list could be displayed and edited. Maybe I'm wrong.
Many thanks for you assistance
Regards