CLI and public bodies
I have for years complained to my Dr's Surgery, Hospital, Police Service, Council, etc. for them to provide a CLI number on their outgoing calls (preferably a number specific to the function that is calling, but the main reception number will do) rather than withholding the number.
Most don't respond, but I do get the occasional "we have no plans for that at the moment."
It really is very little effort for them, but would help the poor householders immeasurably.