How do i blocked calls marked 'Private' ?

[Windows Central Question]

I received a harassing phone call from a 'Private' number and want to block ALL 'Private' calls in the future. How do i ?

 

[xandros9]

I'm not sure Windows Phone can do that, but you may be able to ask your service provider to disallow unknown numbers.

 

[MrWhiteman]

You could with Truecaller but it's currently not working. Windows Phone is totally broken these days.