Thks there is new convenience store close fr my home. If someone in charge of shop don't like u, he would refuse to sell 2 u. It's normal, I don't think...some of theses don't realise foreigners as customers.
i live in the north east side of the usa and up here we have a chain of gas station convenience stores called sheetz that have pretty good food and a place to eat inside. you order your food on a touch screen and they make it right there for you like at a fast food restaurant. there's also a competing chain of a similar quality called wawa on the other side of my state. both of them have raised the standards of convenience store food by a lot for me