Refund not sent :(

They won't give me back my refund of R900 since I changed cars and made the decision to stick with them, yet they still made the deduction of the month. I have called numerous times and I am being told they are investigating. Now I can't even reach them when I call, and even my call back requests are being ignored. I am at my wits end trying to reach out to them, and its shocking because what if I am currently on the road side requesting for help?? Honestly this is ridiculous, poor service from a company I trusted and decided to stay with even after I had received offers from other insurers. If this is not resolved. I am making arrangements to change as soon as possible and telling the family members I referred to do the same!