Unprofessional Sales/Worst customer service ever

I placed an online order (#109926) on the 28th of November, which was invoiced on the 29th. Only for the lady who was assisting me to say there is no stock and I will receive the order in the first week of January as per their disclaimer. I argued that when I placed the order it did not say the couches was out of stock. I can't wait until January for the couches and would like to cancel the order and be refunded. She kept making excuses , and I called the company, some lady picked up and said she will call me. She never did. I then had a whatsapp chat with clearance warehouse, where whomever was not helpful at all. They never get back to me. The 1st lady asked for a banking confirmation letter, which I sent and she said she would escalate it to the manager....thereafter I never heard from her again. The customer service is extremely bad and they don't introduce themselves when they speak to clients, hence I'm referring to them as the lady etc.... All I wanted was for the order to be canceled and be refunded. They can't even perform a simple refund.