Compromised phone number.

I’ve been experiencing weird phone calls and as a result have been warned of personal information that has been leaked. I called Vodacom to check if my number could have been compromised and was unable to be assisted and told that I need to request a court order. I don’t understand how I would be required to get a court order to check records on my personal number.

The service was not a problem. My issue is that my information is compromised. Is there anyway that one can be assisted to check who is listening in on my calls and has access to my information without going the court order route?