Insufficient Stock/Order Cancelled

I placed an order on July 13, 2022 and received an email confirming that my order was "signed, sealed - and will be ready for delivery ASAP". That was the only good news I ever got. There was no tracking update on my order over the next three days until I received an email on 17 July 2022 informing me that there was a technical error which resulted in them selling me an item they do not have in stock. I was told the refund will take between 5-10 working days to reflect in my account. Now I am at a loss with no product, no access to my money, and possibly a two week waiting period. HiFi Corp is still advertising the item on their website at a different price and says it is available for delivery.

Worst experience ever.