Product Incorrectly Advertised

Normally i am a good and happy client of takealot But in the past couple of months Service delivery is slower and items get canceled left and right. I orders a heating pad for R549. Now its "cancelled" as the supplier has no stock...but checking the website it shows as shipment 5-7 days....not "out of stock" BUT also note the price has increased to R999.....this has happened in the past as well Where the excuse of supplier out of stock is provided and the item is canceled But if looking closer Its actually that the item cost has increased. I feel this is very unfair That we as clients have to now order again AND again above R500 for free delivery Due to takealots negligence of not having updated their costs.