Frozen bank account without consent

My bank account was frozen in December month and release in January. On inquiry, I was told someone reported that he has bought furniture from me, deposited money into my bank account and I did not deliver on 25 November 2022. My friend's account has been also frozen to this day and the bank told her that I have reported to her that I paid money into her account and she didn't deliver what I paid for. To date, I have contacted Capitec and Ombudsman to give me answers for all this and all I get is processes. I have an affidavit and all other communication that I directed to capiteic and their response is unsatisfactory.