FNB ***** division gave false information and now they have blocked my bank account and ruining my life...

A supplier didn't supply goods I paid for and paid back my money via eft. When I recieved the proof of payment I asked FNB to verify it and they couldn't saying it was ****. I then blocked the clients account and to my amazement the funds did come into my account. I then emailed FNB ***** to say they must unblock his account and it was a misguided misunderstanding. They still haven't unblocked his account nearly two weeks later and now have blocked mine at Capitec as if I had proceeded and opened a case of *****. They are not talking to each other internally and no one knows whos doing what. They are ruining both our lives in days and don't care. We are just in a computerised system that is obviously being manned by people fast asleep and unqualified and what is worse is this is serious business. I hope FNB just goes to the dogs. This is disgusting reporting falsely as the safety deposit box saga. I just imagine what else goes on internally. They don't care while they continue to ruin lives!!!!!!!