Poor pathetic service by dstv

A few weeks ago my services where disconnected and I'm a price lock customer. After been on hold for 30min by the dstv call Centre, they told me I'm in arrears. These people have been debiting my account on a monthly basis. Eventually my service was reconnected and I was advised it was a technical fault on their side. 3 days ago I received a sms stating I should pay R735 which is **** as my subscription is R500pm. I called the contact Centre, the lady advised me to ignore the sms, just a short while ago, they debited my account for R735. They guy tells me my premium is normally R510. But Im in arrears for R211. How do u become in arrears coz they disconnect ur services immediately until u pay their bill, also being on pricelock, their amounts change. The gentlemen couldn't explain why I'm being charged extra. I want this pathetic service disconnected and removed of my property asap.