Fed up customer

Hi on the 15/08/22 went to fill my car for R200 fuel it’s went twice in one transaction I have proof went to the petrol station to ask them to reverse it for me. They couldn’t help me went to my bank Fnb with a hope they will assist me even with them I don’t get any help petrol stations is saying I must go to the bank, bank is saying it’s petrol station duty to reverse it. Kindly please assist me