Double Charges every month

I have an account with DSTV (MultiChoice) which I have been paying manually via my credit card. For the past two months DSTV (Multichoice) offices are unmanned and they have decided to put everything on autopilot and as such activated a debit order against my current account which runs about three days after I have paid my account. I have tried to contact DSTV (MultiChoice) in order to rectify this. It costs me R 41 every month to reverse the double payment that DSTV(Mu;lyiChoice) refuse to rectify. I want DSTV (MultiChoice) to desist from running the debit orderagaiunst my account and reimburse the R 41 per month for the past two months. So I want assurance from them that they will stop debiting my account and refund the bank costs. There is another service that I pay less for and have access to free to air programs for which DSTV (MultiChoice) insist on payment.