I am extremely dissatisfied with FNB’s handling of my account and lack of support

I am extremely dissatisfied with FNB’s handling of my account and lack of support. My account is currently -R600, and I was told my R6,000 overdraft was used, despite no visible transactions reflecting this. FNB claims it relates to “pending transactions,” yet no details or resolution have been provided, even after 24–48 hours. After reviewing my statements, I identified duplicate transactions (±R6,104) linked to my virtual card. Merchants (Uber and Checkers) confirmed they each received only one payment, meaning the duplicates were not on their side. These appear to be authorization holds that were never reversed. It has been over 5 days, and the funds are still not returned. Calls to FNB are unsuccessful, with dropped calls and no assistance. This has impacted my ability to cover basic needs. I am very disappointed and would not recommend FNB.