I want my money back due to your technical glitch

I am VERY distraught, disgruntle and highly disappointed. I have been with Vodacom for more years than I can count on my fingers besides having a cellphone contract. My contract I have now is for 36 months which should be coming to an end next month, when I took out this contract I took insurance as well for the unfortunate situations. I lost my phone and claimed for insurance to my surprise I am charged R4161.25 for the claim. And NO, this is not the access fee but for the insurance that Vodacom had a supposed TECHNICAL GLITCH and the insurance was cancelled from the contract. Firstly: I want to know why I must pay for a glitch that happened within your huge company whereas the debit order was going off my account every month with no fail. Secondly: No one and I mean NO ONE had the decency to let me know that the insurance on my phone has been cancelled but you keep taking your money. Where is the proof of the glitch? Where is the proof that you sent me communication informing me that my phone is not covered. Thirdly: WHY and the most important question WHY must I PAY for a glitch in your system that you never thought to inform me about as your client. Where is the transparency and how do I ever trust such a big company with my money again. Lastly: I want my money BACK!!! I should not be paying for a glitch on your system that I had nothing to do with and you failed to advise me of. On top of all of that I had to pay a further R1709.00 for the access fee. This I understand and willing to pay as it comes with the insurance t's and c's. But I want my money back what is the point of having insurance when I have to pay an additional R4161.25. I would like my money back, a formal apology and evidence of the above or else I will be taking this further to the ombudsman. Vodacom, I no longer have faith in your service.