No accountability

Its happened again. I don't understand why transactions that were already processed is being reserved. And no response from numerous emails being sent. Which department deals with reserved funds because the branch and secure chat can't help me. And no one is talking accountability to resolve the matter. This is the second time this has happened. Please see below.

February 2022 No customer service

I have had an outstanding card authorization reflecting on my account for over a month and have tried to resolve via a branch, secure chat and email however keep being told that there is nothing outstanding showing on their system. I know this because the is no debit, credit or Merchant transactions for this amount on my account and i have no idea why fnb is reserving the funds. As a result my account goes into negative and i am charged the overdraft fee as well as item paid, no funds available fee as a result of this hold on the funds. How am i supposed to resolve this when noone gets back to me or knows how to resolve the issue. Truly contemplating just moving banks, what horrible service fnb