Disaster store on Aliexpress

I am perplexed by the seller on Aliexpress called OKK's fashion ***y lady store. I placed an order online for a S dress in beige, it was not marked unavailable, after paying the store messaged me notifying me it was no longer available, I said ok please refund me then so they tell you to cancel the order, upon which you need to indicate a reason, so I chose product not in stock. The store had the audacity to message me and say that I need to change the reason and their boss said if that's the reason they won't have work anymore, I said no I will not as that is the reason I canceled so they try ********* me saying that if I don't change the reason I will not get my refund... I have screenshotted it all, I told them I will report the store and also put this on social media then they tried telling me I must wait 30 days for the dress they will get one, I indicated I have already bought another from another reputable store on Aliexpress and they not keep asking me can they confirm tomorrow with me. I think this is pathetic and they should not be allowed to sell on Aliexpress