Shocking Service and Administration from Vodacom Insurance

Vodacom Insurance service and admin is utterly shocking- I have cancelled my insurance every month since March 2020. In March and April 2020, I was still billed for the insurance despite cancelling, no refunds were issued. I had to then cancel in May again, it then appeared the next month and so on. We are now in August and this is still appearing on my statement despite receiving a confirmation in writing that this wouldnt happen again. This is pathetic service and why should I need to phone in every month to be placed on hold for 25 min to have this matter sorted- this is permanently cancelled. I cannot understand how this happens month after month. This is extremely unpleasant service- despite being a Vodacom customer for over 20 years, I will be looking to move a service provider that is capable of handling their system and delivering customer service