Insurance cancellation

On the 31st July I contacted Vodacom to cancel my phone insurance. The consultant assured me it had been done. Weeks later I receive my invoice with an increased insurance amount. I call again and another consultant advises me that there was an oversight but my request will be actioned. Some more time passes and I realise that the request was not actioned. Another call, another consultant, and then 8 consultants later still nothing. During this time I have been authenticated ad nauseam and received so many apologies, yet my request has not been actioned. My time wasted with Vodacom and all I want is less entrenchment from them. You cannot take it out on the "robotic" consultants. Vodacom processes are so inefficient and don't cater to the customer. Cancel my insurance policy from the 31st July