SHOCKED IN THE WAY I HAVE TO STRUGGLE TO GET MY MONEY OWED TO ME

I have been a customer of DSTV for so many years now, I decided to upgrade to the new explora, it was such a mistake, the installation guy did not set up everything to work, so I cannot use the new decoder as my old decoder has all my recordings on and I can use only one decoder. My extra view does not work as the installer did not do the installation, I ended up phoning them daily to try and fix it, they accidently cancel my contract, resulting in me having to pay more than R 4000 that they deduct from my bank, and you know how I am struggling to get that money back now for more than 40 days, phoning them weekly..... And then they have the nerve to block my account cause I did not pay, as they can use the money they owe me?????? Their customer services, I speak to 2 people, they cant help me, the third one helps me in minutes.... I am so very upset with this. And every time I call I need to explain AGAIN the whole story and why I am calling, why is there no notes made by all the other employees that assisted me????