DSTV Decoder Insurance - Not cancelled as requested

In mid November 2019, i decided that since my DSTV subscription was too expensive and lets face a waste of time, i decided to cancel the subscription as well as the insurance on the decoder. I placed my request to cancel on the 17/11/2019. On the 22 I checked online and i saw that i still had balance for the December 2019 subscription which included the monthly insurance. I checked once more today and i see that they have finally dropped the monthly subscription but I am still being charged for the insurance. Which should have been cancelled as well. The payment is due on Sunday 01/12/2019. I am extremely irriatated that they have done only half what was requested. I would like some to contact me to cancel the insurance immediately. For heavens sake I have even disconnected the decoder there is absolutely no reason to continue with the insurance for the decoder. Why should i pay for a service which i specifically asked to be cancelled. The service from DSTV multichoice is very slow and unacceptable.