False advertising, where's my order!!?

I purchased an air conditioning unit on the 18th of November via online (MAK ********** ). A week later I was contacted by Makro to say they did not have stock of what I ordered even though at the time of ordering their online site advised that there was stock.They proceeded to offer me a cheaper unit and a different brand to what I ordered. I told them to cancel my order as they falsely advertised on their site and I wasn't interested in another brand. They later then came back to say they have found the product I ordered at another branch, have put my cancellation on hold and will have it delivered...crickets..... crickets.... crickets.... no response to my requests on when the unit will be delivered. DO NOT TRUST MAKRO ONLINE PURCHASING PLATFORM! You purchase something 1.You have no control over whether you will ever get the goods 2. They delay on refunding your money when asking for order to be cancelled.