Vodacom Insurance Finrite, terribly not cancelling insurance

I have been trying dor the last couple of months to get a cancelation on my Vodacom Insurance as well as get a refund on the last two years that I was paying when I already cancelled two years ago! I work mostly abroad hence the fact I keep emailing them and not call. However when I was in South Africa these last couple of months I called everyday and everyday they said she will sort it out now amd call me back or correspond on email. Till this day NOTHING. This is a absolute joke. I sent proof that I cancelled it 2 years ago and still they dont get back to me with the next steps. And I am STILL paying for it even with the enquiry into the deduction from my account I am still paying for it! How the hell can they continues like this. Finrite insurance apparently.