Takealot / JustSimplifiedSA False Advertising

I bought a LuxPower LXP 5000 Hybrid inverter on takealot from JustSimplifiedSA. My brother did the same. We ordered in the 14th of Jan 2023. The price was very good. R16000. On the 19th of Jan they increased the price to R22000 and said it''s out of stock. Today, the 23d of Jan, suddenly I get a mail from takealot saying the order was cancelled cause the supplier is out of stock. That's a lie. We all know that it was false advertising or that they made a mistake. Either way, I don't care if whether it's false advertising or a mistake. They have to deliver on their promise. When we bought, they had stock. Done

I have screenshots and PDF evidence of all of this.