Double billing from BP M1 OASIS

On the 26th January I filled up at BP M1 Oasis and paid with my debit card for an amount of R562,22. 3 days later I got a notification of debit from BP with split amount of petrol R522,00 and oil R39.90 which made me wonder if this was done on purpose, the initial debit was a combined amount and why split it now? I then called BP and was transferred to Andries who immediately blamed the bank and told me my bank always does this. I then called my bank and they explained I need to lodge a dispute as the account is indeed double debited, due to frustration and need of my money immediately I again called BP and was put on hold for almost 15 minutes. I eventually hanged up and called again, a lady who was very much aware of my complaint answered this time and she told me its not their problem I must just take it up with my bank and hanged up immediately. She did not show any remorse or whatsoever and even the attitude was so unacceptable. I am now in a process of getting the money reversed from my bank, my question is , \couldn't BP M1 Oasis show some interest on the query and investigate what happened on their side and refund me"where is customer service and care?"""