Frustrated client

On the 9th November 2022 the funds on my business and personal account were pledged bassed on the call that FNB received from the person so called Mr Mlaba saying that the were funds that wrongly went in to my account supposed to to go to his business account since it was a business transaction. But this complaint did not provide any evidence(supporting documents) as a proff that the funds were his but FNB pledged/put on hold the funds on my account. I believe the complainant is working with someone from the bank that is why it was so easy for my accounts to be on hold without any investigation based on that allegations. When the ***** department of FNB Miss Nelisa Skondo sent me the information of the complainant sad " as the banke they only received the call from the complainant the only information of him they have is only his number and name nothing else" that email I do have. I also sent the proof that even the money that she pledge was from another departments that we are doing business with. My employees did not get paid and did not receive bonuses since is December. Is that the way FNB treating their clients based on hearsay. FNB went on also freezing the bank accounts of people that I was paying but I heard that on the 6th of December those accounts were released based on that the were no evidence what so ever FNB sent the email to the banks of the people that were affected but till today my funds are not yet released and no one is updating me as a client. I need answers