The last I heard it's like this:
1) Police will not open a case number unless you can show your life/well-being is being actively threatened
2) if you succeed in nr.1 above, then you have to pay a lawyer to represent you in court (court fees apply too)
3) If you are lucky enough to find a bright attack dog with lock-jaw (nr.2 above), then court-order must be paid for and stamp duties etc
4) At this stage It was fuzzy on sheriff of the court's involvement for which you may also have to pay
5) hopefully nr.4 above is null and nr.5 is the actual next step: you take court order to your local fleecing agent: the cellular giant
6) At this point you beg and pray for the two brain cells shared between the 30 or so consultants and advisor's to come together supply the relevant documentation in the relevant department to be processed by the relevant legal representative at said fleecing agent.
7) At this point you're pretty much screwed: their bull-dog is going to want to fight with your bull dog for which you pay premium hourly rates. (hope you got a trust fund handy, you'll need it.)
8.1) If your bull dog is lucky enough to emerge on top (however low that might be, don't discount possible further trips to the courts and additional fees) then
8.2) their upper echelons of almighty wisdom have to be persuaded by their bull-dog that they can't actually bribe their way out of this one like the countless times previous.
9) The walking gods of solid gold, sweating thousand dollar bills for having to lift a pen, then sign the doc and instruct the IT guys in the fridge to press a few buttons to:
10) deliver to you your constitutional right to privacy.
How?
by exposing the callers number on your handset which is what they should be doing in the first place, instead they are fleecing the users and the system. The cell giants protect the criminals and make money out of the average-joe, law-abiding citizens by ignoring your rights: by exposing the number by default you can then see if said intrusive call is desired or not. By hiding the number your privacy has to be invaded first, only then can you know if the call is wanted or not.
This subject continually pops up on myBB, and NONE of the cell companies respond to you when you confront them on the issue of your rights. (because they are profiteering from an upside down system, so too is the system itself.)