Poor service - AGAIN

I have had such bad experience with DStv for such a long time now. It has almost been 2 years since I had DStv and they charged me a premium and holds me liable for this. Since the beginning of 2017, the lightning struck in our yard, causing me to buy a new decoder and LND cable twice! The second time I only replaced the decoder and phoned the call center. The lady could clearly see on her side that there was no signal and exclaimed I need to buy a new cable. I told her that I am not going to replace this cable again and she may cancel my subscription. Although I already paid for the full month which I only viewed about a week or 2... Clearly she did not cancel my subscription as I was charged almost a full premium for the next month (Them explaining it's for the 5-7 days) which I do not understand why because in the first place I already cancelled my subscription and secondly if my premium was only R460 why would they even charge me R300 and something? I have had multiple conversations since then with Multichoice in regards with this matter. But yet again NO ONE is doing their job.... I have now received a call from attorneys which my account was handed over and was told that I am liable for this payment. I once again told the guy that I am NOT liable for this payment! I would once and for all like to sort out this matter, if someone could please phone me from Management or someone who would be able to assist me and do their job CORRECT this time.