alan_m wrote
Rod Speed wrote

But it will work fine when the utlity is warning you about an impending
flood or the power being off for hours when maintenance is being done.

If you have signed up to a flood warning service maybe

Makes no sense to have to sign up, makes a lot more sense to have
the system call all the places in the area which will be affected.

but utility companies phoning when services are
about to die is not a realistic real world situation.

That's not correct with urgent maintenance.

I have CC/bank fraud contacts set up but they use 3 methods in parallel,
by land-line, mobile text and email. When I have had calls from my bank
and a couple of CC companies they have presented sensible numbers -
and not numbers that UK cold callers often use nor number withheld.

Sure, but it isnt feasible to expect everyone to have that sort of thing
setup for warnings about urgent maintenance to the power or water
supply etc.