FALSE ADVERTISING PIC N PAY ASAP

I saw Gold bar premium whisky advertised on ASAP app at the discounted R143.99 marked down fro R1599.99. At the time of me placing the order I showed there was stock. I placed my order at 7.25am and it was accepted on the app at that same time. At around 9.55am I get a message via the ASAP app saying my order was cancelled. I called PICK' N PAY call centre to get clarity as to why my order was cancelled. I spoke to an agent by the name of SANEZ who confirmed that pick n pay realized the error in the advert and that is why my order was cancelled. My argument is that at the time of me placing my order the their pricing error had not yet been realized by them they only saw and rectified this later I as their valued customer should get the items at the price I saw and at the price they accepted my order at. This is the 2nd time ive had this experience withe PICK 'N PAY ASAP FALSE ADVERTISING.