FNB FREEZED MY BUSINESS ACCOUNT WITHOUT NOTIFYING ME

I'm a business owner with business account with FNB bank for 3 years now, my business account was frozen yesterday without my consent.

I made effort to contact the bank and they redirected me to the ***** hold department, I then ask them why is my account frozen without them notifying me. their respond was that there was a transaction that was reported on my account by a client that paid for goods on the 14th of January 2023, they gave me the breakdown of the transaction and where the transaction was coming from.

I then contact the company who paid the transaction into my account to question the reason why they opened an investigation for the transaction they made to my account for the goods they purchased on January 14th 2023, the company then told me they never called or message FNB Bank to report any ***** transaction.

it been a stressful day at work for me before customers can't make payment to our account and we losing customers already.

Someone please help me, this is not right.