Specials? BEWARE shoppers!!! Don't buy 2 at the same time!!

I am severely disappointed in Checkers specials. They advertised Kanonkop Kadette Cape Blend 2 x 750ml bottles for R200 on special. I bought 4 thinking that would mean I would pay R400 for 4. However, I was only given the special on the first 2. I had to pay full price for the other 2!! Really???!!! If the cashier had told me (and I did ask her but she didn't know) I would have bought 2 today and 2 tomorrow or the next day I am in the shop! The special is on until 26 Dec. So BEWARE shoppers. You can only have ONE special at a time!@@@