Cancellation of insurance

I cancelled my cellphone insurance with Telkom mobile on the 4th of July 2017 and the last billing was supposed to be in August 2017. In September and October 2017, I still got billed for the cellphone insurance which I cancelled in July 2017. I called Telkom again and they said they will log a call with their billing department and they would get back to me with in 72 hours. I called again on the 6th of October 2017 and the guy that was assisting me said my case was still pending and had not been attended to yet, which is days passed the 72 hours that they were suppose to get back to me. Now they tell me I must call the service provider (Finrite) that Telkom has appointed and ask them to send Telkom confirmation of the cancellation of the cellphone insurance, which I did and they said a confirmation email was sent to Telkom on the 4th of July to inform them that the insurance was cancelled. What are they playing at here and can they please reimburse me my money for the 2 months.