If I get harassed by a blocked number can I legally find out what number the harassment came from?

I think that harassing phone calls are criminal behavior. If you do that to someone it is a crime, not a joke. Especially if it is a private residence.

Now this has happened to me. If it happens again I’ll equip myself to find out who has decided to act this way.

What I’m wondering for now is can I find out who made this call in the first place? If the answer is no then why not??

Am I to believe that a harassing phone call is acceptable behavior whose consequence is only on the victim??