Hi-Fi Corporation advertises good that they DO NOT have in stock

I bought two single beds online at Hi-Fi Corporation on 14 January 2021 and paid using my debit card. On 21 January 2021 after phoning the call centre many times, I was told that the beds were not in stock. How on earth would you advertise beds on sale when you do not even have stock. So after enquiring about my refund, I was told that this will take 7 to 10 working days for my account to be credited. This kind of service is not only bad, it is immoral to take money from clients when you know very well the product is not in stock, then penalize them even further by holding on to their hard-earned money just because you want to earn a bit of interest on their money. I will NEVER buy from Hi-Fi Corporation ever again and I will tell as many people as I can to do the same. I should have gone to Hello Peter first to see the reviews as I have read through almost 30 bad reviews about this shop and there is not a single good one.