When it became clear that she could not hope to return home, the alarm was removed.
Some time after this and following Mum's death, we received a bill for the time we had 'used' after the alarm had been taken out.
I rang the relevant department who were most apologetic and said that there would be no more such bills.
Well, one arrived yesterday, again addressed to Mum.
Perhaps I should return it with the comment 'STILL deceased'. I am giving the matter consideration.