FNB FAILING CONSUMERS

On the 28 February 2023 R4000 was debited from my account and I called FNB to reverse it and they said they couldn't, I asked them who is this company so I could call them and ask for my money back, the agent I spoke to promised FNB would SMS me the name of the company. Till today I got no SMS. Had to find it myself and when I did they would not reverse my money stating they don't do any refunds. This is my money and I didn't sign any mandate for this company to take my money. I feel FNB is failing consumers as they don't take such cases serious. I feel FNB must do more and get me back my money.