Failure to deliver goods or refund money

I ordered skincare in one of their sales. The products were in stock on their system when I ordered. About a week later, they let me know that they didn’t have stock of most of what I ordered and would give me a store credit. I immediately rep**** and asked for the money to be refunded to my card. They then asked for my banking details which details I provided. Nearly a week later and they are not responding to my emails and have not refunded my money! I would definitely not recommend buying from them as the customer experience and care is appalling. And will no longer use them going forward.