Unfair Hold on account

Tyme Bank has put my account on hold because of a non- existent reason. I save part of the money received from my business on my tyme bank account. I’ve called tyme bank and they asked me to write an affidavit so they can release it but they haven’t released since I wrote. This is the story of what happened: Greetings I am a banking with FNB business for a very long time now and have a furniture manufacturing and interior decor company. I had a client who paid me deposit for R5890 for cupboard wrapping and we could not find the preferred texture of the vinyl wrap and I asked him to change to something then he refused. I then offered to refund the client in 7 days after the manufacturer has refunded me but he refused and demanded the funds immediately as he was communicating with my PA. The client was swearing and threatening and even came to our business premises. On day 3 he reported our business as ***** from his own bank Investec which requested FNB to block my business account. Thabo Lebepe from FNB Rusk/***** asked me to write a statement which I did and submitted to him with proof that I did not **** him and I am not a ****mer. An hour later my other FNB business and personal account were frozen meaning 2 of my fnb business accounts are frozen and personal account frozen. On the affidavit sent I then requested Thabo Lebepe to reverse the clients funds and also requested him to unblock my account. I have a savings account with Tyme Bank which I use for saving money, fnb gave an instruction to Tyme Bank to also freeze that account. I am so disappointed with the service FNB is giving me as a loyal client. We have never ****med anyone for the four years we’ve been in business. My business is on a standstill because of failing to do thorough investigation