Refusal to cancel my subscription

Good evening,

I just called DSTV to cancel my subscription and I spoke to a lady by the name of Fortunate, she pretended to try help me and then hanged up my call. I called back again and spoke to Nomzamo and I explained what I wanted to do, she kept me on hold and subsequently hanged up as well. What is it that I need to do when I want to cancel my subscription? Please tell me!! I will no longer continue to pay DStv because you always do this everytime I call to cancel. I’m done paying cancel your ****.