UNHAPPY CLIENT----MBT PETROL STATION

I am so unhappy with this petrol station, the worse service received ever. I will not use them again. I will stick to my Shell etc…So on the 1st of May 2022 i stopped and filled cause it was close by for me. Then I swiped which then declined the payment, I told the petrol attendant that it went off my acc and showed him. He then said no I must swipe again which I did and he stated that they will reverse it. Ok I left it till today NO REFUND. I THEN FROM THAT DAY BEEN TO THE STORE CAN CALLING !!! on The 2nd of May that was the holiday I went again then spoke to the manager a Kitlano she then called FNB she was told it a holiday and they closed. She then said she will personally sort it which was not the case. I kept checking nothing. She then eventually took my call on the 5th of may 2022. She then said there is nothing she can do after she spoke to her higher manager, and I must call the bank and sort it. WHAT THE HELL I was upset its not my fault and I feel it unfair cause they need to sort it. OK then I called FNB I explained my story and the lady said to me it’s not my responsibility it the petrol stations duty to sort it out and not me as the card holder. I then tried calling every day ***) and knowing she is there, they made a FOOL out of me!!!! saying she is gone to the shops and not sure what time she will be back. Really she knows I am the one calling for a R100.00 that needs to be refunded I even logged and called the head office in PTA. I need to know when I will be refunded and are they going also refund me for all this up and down and stress.