wrong billing..& services cut off

Hi <br> I'm currently using a decoder paying for a full bouquet or full channel through debit order paying about R665.00 .My biggest problem is just yesterday R1498.00 was deducted from my account which is more than double of what I pay every month ..On top of that last month my services were cut off 3times in a space of two weeks &every time I have to buy airtime and call them to reconnect. .I'm very unhappy about all this because it cost me lots of money to call the call centre and this month I was overcharged..I want them to pay back all my money back in my account they overcharged and the one I used to call every time they disconnected me as this really inconvenience me as a customer...Your help will be highly appreciated.. Thank you<br>