Appalling post sales customer service

Made a purchase using the woolies app for delivery with dash and due to certain products being out of stock, I was overcharged. I sent a mail to *** to enquire on the overcharged and I received a response by email from Mishal Jules on 10 Sep confirming that I was overcharged and will be refunded. To date, I have not received the refund and no call to confirm when the refund was processed. This is appalling customer service. Dash Order:o***