No refund for goods not delivered

I placed an order online on the Edgars website for clothing and home items on Black Friday 2019. I received my goods in December 2019 along with a message saying that a few items that I purchased were out of stock and they would refund me. It is 11 June 2020 and I am still waiting for my refund for goods that I paid for, that were not delivered to me because EDGARS did not have stock .. but failed to update their website to state that they were out of stock, and allowed the purchase of those items anyway. It has been 6 months and I have called their customer service number and I have emailed, with NO response or help whatsoever. I cannot exclaim how I REGRET wasting my money on a retailer I once loved!!