Woolworths online delivery service - shocking

With lockdown I thought of using the online delivery from Woolworths. I placed an order on the 4th Hune with Woolworths and they mentioned that due to them being so busy the order will only be delivered by 18th June, I was happy with that. They reserved a stipulated amount in my bank account. On the morning of the 18 June I received an email with a tax invoice and in that email they mentioned that the vegetables I ordered was not in stock so I would not be charged for it. While looking at the invoice I noticed that they had charged me for the full price of the chicken schnitzel and not the ordered price I placed on the 4 June. With that I phoned the customer call centre and spoke to a lady called Anpiwe who told me that I would be refunded R155.00 and that I would receive an sms with the voucher number shortly. She then called me later that day saying the refund would only be sent the Friday 19th which I accepted. To this day I have not received my refund and I have tried to call the call centre and am just not getting the service I expect from Woolworths. I am very disappointed.