*****ulent transaction on Business Account

I wish to log a formal complaint against Mercantile Bank. On the 28 Apr 23 a *****ulent transaction was made on my Busines account. Upon on investigation the bank stated that a Google Ads business was made. It was clearly *****ulent transaction as I not have a Google account and R to $ will never give you a rounded amount R20 000. At that stage the money was reserved in my account balance. I contacted Google who in writing confirmed that it was unauthorised purchase. I then provided the bank with this information. The bank still honoured the transaction and numerous promises were made to assist me non of which came true. I was told it will take intially 7 days then it became 14 working then 30 working days as the ***** dept is dealing with it. I do not receive any feedback or any information unless I ask for a current progress report and then I receive a answer from the Bank Manager from Horizon View "I will get on to them sir.". Yet nobody makes contact with me.