Dstv

I took dstv ultra compact on price lock, it started when the charged me over the agreed price which was going to be R500 for the decoder, per and extra view, when I called the lady who helped me acted like I was the mad person claiming something that never existed, last month one lady helped me and I saw my account going to credit only when it was time for the next debit order, they charged me , to my surprise the next day the amount charged to R1002.00 but when I check on the app I only have one decoder I'm paying for but they are charging me R869, for subscription and 136 for subscription so I'm confused and depressed.