Took My Money for N/A Historic Reasons

I have a Check account with FNB that was deducted with more the half of my salary and their reason is that I app**** for Sequestration. This was not applicable to FNB as this was done in 2017 after 7 now they want to take my salary and leave me in a bad debt review. This is not acceptable and I will held FNB liable for any and all extra fees that is charged to my name and account due to this. I tried to speak to some during the week and was told they have sent a mail to the responsible representative and she will contact me back as soon as possible.... Still waiting and no call backs. When I called again I have been sent from pillar to pillar and the one side said they do not see any debt review status on my account even when I indicated that the Checking department indicated that I was under Sequestration. This is not acceptable for something that has been done so long back and not even a communications mail was sent to inform about the situation. For someone also working on Call Centre it is not always possible to answer a call and then a mail needs to be sent before action can be taken! My Current account fees was up to date and then they do this making me in Bad Debt, they will pay me my money back and all the extra fees going along with this!!!