Pathetic service

I've cancelled a contract before I even started to use it and Vodacom just continue to bill me for it. The reason why I cancelled was because the sales person **** to me about the cost of the contract. I am now being threatened that they are going to take legal action because of my bill that is in arrears. To try and call the customer service line is a waste of time and I get told every time that the problem is solved but the bill is just adding up. I called the customer care line at least 15 times already yet the problem just escalates. In fact Vodacom owe me money because the debit order went off after the contract was cancelled. I've been with Vodacom since 1995 but that is going to change as soon as possible.