Increasing or decreasing prices on old stock of goods after a general hike or dip in pricing. ……?

This phenomenon is common among those who deal in hardwares and fuel businesses.

I was refused a sale of fuel last two days at a GOIL filling station when I had a danger signal to refill. Simply because there was an increase in fuel pricing and their system had been lock awaiting adjustment.

I wonder if that is the situation elsewhere?

Just note that the fuel price has gone up at the pumps.