No assistance for unauthorized money deduction from my account R

I paid using my card in November 2020 and money went through. In 2021 March same amount was deducted twice from my account. I called FNB bank and report the unauthorized deduction and until now nothing has happened. They were very quick to tell me to cancel my card and organize that I get the new one, but regarding my money surely they don't know how can they help me. I have lost hope in getting helped by FNB. I never even get or recieved a call from them to assist and when u call, it takes very long to go through. You really need to have lot of airtime otherwise u will never go through.