Worst service ever

I made an incorrect eft payment to Woolworths. After notifying them on the day of the error and an email to state the error. I was advised to give them a call once the money reflect on my account. I then called as soon as the money reflected in my account. All of the relevant documents was sent as they requested them. Emails was received to state that they have received everything and my refund would be processed. I have given Woolworths numerous calls and emails to ask for updates. I was advised that my refund would reflect by Friday 07/08/2020. To date no refund has been made and Woolworths is not making any effort to sort out this problem. This has been the worst company to deal with. They don't call back. You cannot speak to any manger and they just keep logging emails.