Double billing

Poor service from MultiChoice, my account was double billed via debit order. I reported this to their call center, was promised feedback within 24 hours. Its now two days I still have not received any feedback. As soon as my query is resolved, I am cancelling my debit order. Now I understand why most people prefer to make payments on monthly basis than debit order. I will have cancelled my subscriptions but that will be punishing my kids. It is very frustrating considering that you also spend 30 minutes on the phone only to find out no one can help you.