I am using vodacom (SA) the person calls me around 1:00 am and just keeps quiet i can hear the breathing
I don’t think that you can track the number. But you can call your service provider and have it were they block private and anonymous callers unless they unblock their number. If your provider doesn’t have a service like this then you always have the choice of not answering the phone or answering and threatening to call the police, although I’m pretty sure they would do nothing about it. I hope the people stop calling you! It’s probably just some teens who like prank calling people.