Capitec failed me!!!

On the 15th March 2020 an amount R211 was taken from my capitec account by an online thing that I don't know. I immediately called capitec Bank to ask if they can't reverse the money and they said no they can't because it's an online purchase that I probably authorized and I told them I don't know of such then they didn't help me. Today the 25th March 2020 an amount of R828 was taken out of my account its an online thing that I don't know and I called capitec to stop my card and ask if I can't reverse the money and the say no your complain will be escalated to the card department for investigation. So I asked them because the money is unprocessed can't you reverse it then the lady is like "sister you've been asking me the same thing over and over again" imagine!!!! I'm disappointed with your service and your agents capitec!!!