Order cancelled within 12 hours of making payment

Purchased 2 x "Decoded 15 Inch Leather Briefcase - Black" sold by "BEARE BRAND" on Takealot's "Shop More Deals" for R999 (75% discount) on 19 January 2022. Received an email from Takealot earlier today informing me that one of the two orders has been cancelled:

We're sorry to let you know that we no longer have stock of the below item(s) in your order. We were unable to source the item(s) from our suppliers and have unfortunately had to cancel the item(s) from your order.

I find this very hard to believe as when I click on the cancelled item in my Cart I'm redirected back to the item which indicates that the seller indeed does have stock, price has now increased from R999 to R2,799. I am of the opinion that either the supplier or Takealot is trying to get out of the R999 deal. Takealot advised that they cannot supply the item at R2,799. This really is not my problem. Takealot claims that the page I'm redirected to is from a different seller, I honestly find this very hard to believe.

Item was placed in my cart, I received an email from Takealot LAST NIGHT 20 Jan 2022 at 22:31 advising that I had 24 hours left to pay for the item before the order would be cancelled, I immediately made payment. This morning (more or less 12 hours after making payment of R999) I was informed that the item is not available and the amount of R999 has been credited to my account.

I'm a regular Takealot customer and am very unhappy about what has happened here and feel like taking this matter to the Consumer Protection Board as this is extremely *********.

As at this moment this specific item is still available on Takealot's website, now just at a much higher price and obviously no longer a "deal". Takealot can supply the product but is not willing to make a loss of R1800 (R2799 less R999) due to an error made on their and/or their seller's side.