Blocked account

My name is Mbhumbhi Calfonia, I have an account with CAPITEC Bank, my account was blocked in 2020, I have forget the month, I went to make inquiries with the bank and I was told it is under investigation because there were people that reported my account to the bank, and those were the people I know, so the bank said they are the one's whose going to ask the people to submit the required documents to the investigating officer, I must not get involved, and I was asked to submit my affidavit as well, from 2020 till to date nothing is happening, they are not finalizing the case, if I asked them they keep on telling me that they are still waiting for one person to submit the affidavit, I have lost hope in the institution, I don't know what to do now, the worse thing is there money in the account that has been there since the account was closed. You guys are my last hope please help me