I was ****med on their credit card and I don't feel like they were supporting or helping me

I was ****med on their credit card and I don't feel like they were supporting or helping me. Immediately when I realized that I was **** where people called me and told me they are activating my vouchers and convinced me to give all particulars and when I check my balance R20 000 was gone. I called ***** department and asked them to reverse the money they refuse saying they don't reversed money but open an investigation case. As this was not withdrawn but paid to particular stores I feel like they could have reversed it. Now I owe the money I didn't used. How can you help me?