Terrible service

Almost every month I logged a complain about DStv poor service. I can't wait the day I get a smart TV and subscribe to Netflix/HBO I am going to CANCEL THE SUBSCRIPTION and get rid of the decoder because DStv is ripping us off our hard earned money. I won an upgrade from Compact to Compact plus for a month, when I checked my balance I was charged for the upgrade. the following month I was supposed to go back to my initial subscription- Compact but I was still on Compact plus which I didn't subscribe to. When I asked them to change my payment date I was charged a pro-rata fee Of R213 from the 27th December to the 6th January, I also asked them to downgrade to my initial subscription which it was Compact my balance went up to R368. How come it went up because Compact is cheaper than Compact plus? and why did they charged me for the upgrade that I won?