We are disappointed at MTN ☹️

We are disappointed at MTN ☹️. We took a contract for two iPhones and my wife already had an existing mobile phone contract with insurance and both new iPhones were also insured. MTN cancelled the insurance and we were informed in November, but they continued to debit us for insurance that doesn't exist any more. We have been querying this for over 20 times with insurance and MTN customer service. Insurance says they informed MTN to take us out of billing and MTN says they still see insurance on our billing and there is no communication from insurance. We have sent insurance bank statements and invoices for refunds but no luck! They have now suspended our lines and we are so frustrated why this is happening to us. I will never recommend anyone to do business with these ****s!