Vodacom Contract nightmare

I have taken a new contract with Vodacom, a decision I regret daily. Once the contract was activated, all calls I am receiving are now private. Vodacom does not seem to be able to know or care to resolve this issue for me. Can you imagine the frustration of missing important calls and not being able to return them because Vodacom is useless? CLIP seem to be activated when I check on the App, and I bet they will be charging me that R10 at the end of the month for a service they didn't care to give.