Frozen account

Someone deposited R4000 in my account and reported it for *****,Now my account is on hold for almost a week.I told the bank to refund the payment to the Capitec client who made the deposit but they want me to provide the Account number of the Capitec client so that they can reverse the payment and unfreeze my account but i can't get hold of the person who made the deposit.I can't do anything and my salary is going to be deposited in that account on Friday. I will switch my Salary to Standard bank tomorrow if i can't get assistance asap.