How do I block a contact on my Blackberry classic? That includes whatsapp, calls etc.

Hi,
This isn't perfect but a lot better than standard. It works on BB10.
Set up a new contact I use one I called ZZ Don't pick up - I use ZZ so it's at the end of my list. Set the contact's ringtone to silent and vibrate to off in the settings menu.
When you get a nuisance call don't answer it; check it with Google or similar. If a nuisance call, then long touch the number; the right hand menu pops out touch the save number; go to the contacts list; select ZZ Don't pick up and add the number to this contact. Do this for every nuisance call and you'll build up a list in there.
When one of these calls you'll get no sound or vibrate. You will get notified but you can ignor as it will be ZZ Don't pick up. It works for me....
What's app I don't know. I don't use it.