Inefficient in resolving customer issues

I poured petrol on the 4th of March for R563. On the 8th of March two transactions: R500 and R63 were debited from my account by the same merchant. When I called FNB Private Client a lady by the name of Melissa told me that the inContact SMS received on the 4th (R563) did not imply that amount was deducted already but only "reserved" and that the available balance would not haave gone down. (This did n’t make sense to me because my balance did indeed go down) her explanation of the process was pure lies and an indication of her limited knowledge of the process (She told me there was no error even when it was clear that my account balance went down twice). Currently, there is an amount of R563 still pending. If the R500 + R63 went off officially yesterday why is there a pending amount of R563? Finally, I phoned my private banker who referred me to Reneilwe Sebesho who fully comprehended what had happened. She made me fill a debit card dispute form. My biggest issue is that I'm told I'm going to receive my money after 24 days!! really? 24 days? Meanwhile, my monthly budget must be R563 off? Really FNB. Why am I a private client then? This is really inefficient. I need to pour petrol tonight please have my R563 released from pending onto my account because the merchant has already received their money.