FNB Card Does not know there own stsyem

I experienced a problem with an online payment that I made using my credit card (at 9:46 2021/04/16) whereby the transaction failed on the seller’s website but it went through twice on my credit card – I received the email and sms notifications that the funds had been reserved twice. I called FNB card division to resolve the problem however after I explained what had happened the lady informed me that she could not help me and put me through to the Merchant department. They then informed me that I was not a merchant and that it was not in their area so they transferred me to Easy Transition accounts, who then informed me that as this was a credit card it was not in their area either and they transferred me back to the Credit Card division. The lady at the Credit Card division said that she did not know what to do and that I needed to go to Authorisations, the Authorisations division said that could see that the transactions had already gone through so they could not help me. They put me back Credit Card division who then transferred me to the ***** Department who informed me that it was not a ***** issue as I had tried to make the payment and I would have to speak to the Credit Card division. I have been on the phone for over an hour and I have been pushed to every department with no resolution to the problem! PLEASE could you get someone to call me who can actually assist in sorting out my problem?