Impossible to cancel dstv internet

I requested for both my dstv internets to be canceled as I changed my mind and do not want it anymore then I got a phone call that a collection would be done and both router wil collected and my account credited and that will has not happened the products have not removed from my account and I am sitting with an outstanding balance over R600 and no one is able to help me please remove both dstv internet products from my name and credit me because I have repeatedly asked for it to be canceled and removed form my account but instead I am being billed I can not afford to pay over R600 for products I asked to be canceled I can't even reconnect my decoder right now because I want this problem to be sorted out on my bil I want dstv internet off my account before I reconnect my decoder I don't understand why multichoice is making this so difficult please cancel both dstv internet's immediately and credit my account