Creepy caller blocked, but still gets through to my voicemail
Blocking phone numbers on Android is not possible...

The work-around that developers use is a redirection to the voicemail number, redirecting calls to voicemail is the only option... 

HOWEVER, From the Voicemail side &amp; Mobile service provider's side, things can be blocked !  


Call your service provider and request the number to be fully blocked from ever connecting at all..  . 


Alternatively ( if you don't use voice mail )   

A workaround i found using the call setting....   

• Change your voicemail number,
It is called ( redirect on unanswered ) an can be configured in the call settings.  

I changed my number to +610   and it allowed the change. . The voicemail ( redirect service ) will redirect the call to a non existent number like +610 and then end the call ( They'll hear - "This number is not connected" )   .