Wow. This place is awful. Just so so so awful.
They don't accept credit cards, they have a small selection, and it's kinda dirty. The worst are the employees, though. I was always grateful for a cashier that was just indifferent towards me rather than openly hostile.
I had one experience where I opened a fridge to get a Vitamin Water, and a bottle of water just fell out. As I was picking it up to put it back in, the cashier walked up to me and said I had to buy it. I thought she was joking, so I sort of chuckled, and then her scowl told me she was serious. I explained that I wasn't about to pay for an (undamaged) bottle of water that fell our of her fridge just because I opened it. She then said she'd call the police!!! I walked out and said call 'em - I'm parked there and you can take down my license plate. Then the sketchy customers in the store started heckling me.
That was my last visit.