Please release my money. !

In April this year. I deposited R 30 K into a ********** account in error. I realized this 2 days later. and immediately reported this to standard bank Milnerton. They managed to freeze the account and retrieve my 30 K. They reported the matter to the ***** department and told me my 30 k would be held in safety until they process their investigation. I have repeatably asked them to release this money as I have to pay for a deposit on a flat. It is now June and can't seem to get anywhere with them. Please can you investigate this matter. I keep going into the bank and keep getting excuses. I JUST WANT MY 30 k If its being held in the bank, they need to release the money back to me urgently.