Billing

I upgraded my mobile contract in August, the billing is not adding up because I've been billed for insurance that I canceled in August for the old device, when I called finrite insurance they confirmed that a cancelation was done but telkom is still billing me. I spoke to a Telkom consultant who told me that the is nothing that can be done on their side meaning that they will keep on billing me for a service I canceled. When you request to speak to a team leader, they refuse. I regret upgrading my contact. Telkom service is pathetic..