Speedmart scammer also. Price increased suka hati only. Sticker price lower than the receipt, but when asked said the price already go up and the cashier said cannot do anything

Being slow to update the price is not customer problem. This is not a practice allowed. They can put notice that the price changed. It can't be that they change price every day or even once a week. I doubt they buy stock every week since they operate the wholw Malaysia. They have contract price for sure.

At least they can offer return for money exchange. Mine was RM1 extra, but it is not about the amount. Even 20 sen is not legal practice. I just report file report to govt. If more and more people reported the practice, only then I believe action will be taken.