I would like to express my frustration regarding the abrupt rise in prices

I would like to express my frustration regarding the abrupt rise in prices. Just last week, the Footlong Sausages were priced at R100, but to my astonishment, this week they have jumped to R142. That's a staggering 42% increase! When I approached the manager for an explanation, I was met with a dismissive and smug response, which only added to my dissatisfaction. It's disheartening to see such a sharp hike in prices without any reasonable justification.