None Refund of Funds Incorrectly Paid

I do not have an account number as I am not a client. I made a deposit incorrectly into Justine's company bank account while using a FNB ATM on Monday 08/07/2019. Since then, there has been a total of 18 email correspondence between myself and the credit control department about refunding my money. The main response I get is to supply my client account number over and over, even after explaining I am not a client. I have been told twice that my query has been sent to the refund department but that was a week ago. I have submitted all the requested documents as stipulated and have been patient and allowed for the constant back and forth, and as much as I appreciate that this has been sent to another department I find that I still do not have the in-depth feedback that a business as large and successful as Justine/Avon should issue in situations such as these. I can not believe that its taking so long to rectify a refund of R1 570 that is clearly not related to the business.