Refusing to honour the advertised price

I ordered an RCT Inverter online at a price of R6999. Today I was informed that their supplier was 'out of stock', and that I could order the same item, but sourced from a different supplier, at R8999. The Call Centre told me that there is nothing they can do. They also indicated that they can't give out the name of the supplier to the public, so I have no way of confirming whether the supplier is indeed 'out of stock', or whether they do not want to supply it to me at the advertised price. It would seem that, by using Loot as an agent to purchase goods, I lose many of the protections offered to me by the Consumer Protection Act.