Pick n Pay Hyper in Montana - Sneaky with Specials

I ordinarily love Pick n Pay and their Smart Shopper deals especially when it comes to dog and cat food BUT yesterday I bought two packs of Jacobs coffee (advertised at R290 for two packs) which were loaded into a specials "bin/box/trolley" BUT there were 300gram packs mixed into the specials bin. I did not notice this until I got home and looked at the till slip. I saw that I had paid R409.98 for 600g of coffee instead of R290 for 460g. It feels as though Pick n Pay Hyper in Montana (Pretoria) had purposefully mixed up the specials bin to hoodwink the unsuspecting shopper. I don't think another shopper had put the coffee there as there were many packs of the "type" of Jacobs Coffee that I bought.