DSTV’s lack of interest in customer satisfaction

I am really frustrated with DSTV’s. They signed me to a contract and they decide to debit twice the agreed amount. I’ve tried calling them about 5 times and they’re simply not interested in resolving the issue. Last time I left a review here over the same issue they responded by saying I will be contacted (I suppose to ensure that the records indicate that they responded), but to date no such phone call or email has been made from their side. This is the price we must pay as customers for their monopoly as a broadcaster. This is pure evil!