Very Poor customer support(lies)

I am a customer of Vodacom life insurance. As off 31 july 2017I was due for a cash back as states in their policy. I contacted them in july to confirm this and it was confirmed that the money will be paid automatically into my account in august 2017. to date their as been nothing. I have made 8 calls in total only to here silly excuses. I was told on the 04/09/2017 that it was transferred and the reversed for some reason. when asked for proof , they said they cant give me any and told me that it will be reflecting in my account in a few days. every time I called them I am being told by the attendant that she will handle it personally and that she can see it is approved and that she will call me back the next day to confirm. I have never received the call back, not even once. they cannot even put me through to a manager to assist as there is never 1 available. its just 1 lie upon the other. for a company of this size it is disgrace to see how they look after their customers and what is more disgusting is that they keep lying to you.