Debited for 2 cancelled policies

I cancelled 2 policies with Clientele on the 15th of January 2016. on the 25th January 2016 I have been debited R900 for policies that I cancelled already. I called their call centre to resolve this I spoke to Pranisha who told me I wont be refunded because if I cancel they have a right to debit me if the debit date is within 30 days of cancelling. I requested to speak to the supervisor then I was put on hold for 2 minutes then Pranisha came back and told me that the supervisor (Fezile Kekae) won't talk to me he told Pranisha to tell I'm not going to be refunded and that's that. So the supervisor doesn't even have the decency to come to the phone and talk to a client.