RCS MAKRO CREDIT CARD

I have made two payments on my RCS Makro credit card I have also sent emails with proof of payment to a email address that was provided. But when my debit order went off this month that money was taken again!! I had so many calls from them and told them i have sent prove of payment so now an extra R300 +- was taken from me which was needed for payment of school fees. I would appreciate if this could be sorted out.