Account Blocked: Deposit **** incident no:***

My account stopped working sometime last week, I visited the Alberton City branch to find out why my account stopped working and no communication was made to me. I was assisted by a consultant who contacted the ***** dept and was told that my account was involved in a Deposit ****, they mentioned amounts that were not even reflected on the bank statement, from 15 Dec 2022.. the amount of R1000, R700, and another R1000, after realizing that the only amount reflecting was R1000 they now said I need to go to Police Station to write an affidavit, the said deposit was coming from my sister's account and was immediately reversed since it was an error from her side, why is my account stopped for what happened in another person's account, I had nothing to do with her transactions so why stop my account and I have to run around doing affidavit for transaction from someone's account? I need that account for petty cash, I need it to be opened and show me any rule that says my account must be blocked for transactions that are not even on my statement. If you are unable to unblock it then close the account. I believe the person whose account should be blocked is the one the deposit was made, it had nothing to do with my account.