limited stock on specials and no rain check offered

On Saturday 23 November 2024@09H00, I went into Makro to buy the Yum-Yum peanut butter spread on special for R59,95. The shelf was empty, and I enquired from merchandiser and supervisor, who checked and said there is nothing on stock and this morning there was 6 on the shelf. My concern the supervisor didn't even offer a rain check (for when the have stock) and how can you only have six on shelf for the morning.