Saving acc issue

I have a savings account with FNB. Since 2019 I can't withdraw my money as I was told my ID have been listed as *****. It's funny how it's only appearing at FNB. I have went to even investigate my finger print nothing is showing called credit bereu nothing of such is showing. FNB told me to come with affidavit stating that I am not a ***** I did still they refuse to release my money. Can anyone help me with this matter please. An I want to use FNB services as I have had good service with them but now I am even scared to bank with them my salary as I am not sure if I will be able to withdraw or use my funds.