Dollar General

This is the second time the employee has yelled at me "We close in 5 minutes." Or "We're closed" as I'm approaching the register to check out. I have been in customer service for over 6 years & have always been taught to treat people the OPPOSITE of how people are treated there. It's the only store open in our town at 9 PM & I didn't get off until 8 PM. I work 30 minutes away. I got there as quick as I could. I avoid going there unless I absolutely have to because of the customer service.