Double deductions on transactions

I honestly don’t know if I just have bad luck or if the universe is trying to show me how bad FNB is. FNB made deductions from my account on 21 January 2025 claiming that the deductions is to cover some of the purchases I made in December 2024. I made multiple transactions on the same day using the same payment method and some of the transactions went through and they claim that some didn’t. My account is now sitting on a -R2300 for transactions that went through on my account with money leaving my account as I made payment. My experience with this bank has been nothing but terrible. In November they authorised *****ulent transaction on my account and now this. No one is answering the phone when you call. I’ve been on the phone trying to talk to someone for the past 30 minutes. This is definitely a sign for me to end my relationship with this bank. Enough is enough!!!