DSTV won't return my money!!!!!

It is so sad to have to resort to this but I find that it gets results.. After cancelling my subscription by end April due to COVID-19, I used the dstv online payment system but instead of collecting a balance of R284 the system took R1133 including May subscription. I have been in contact with them at least 3 times and keep being asked to resubmit the same proof of payment. They've even gone as far as using my credit (for May) to pay for June!!!! I mean seriously. Pay them a minute to late and they cut you off and charge you a reconnection fee but ask for your money back - how dare you!?!?!