I went to this gas station on 09/16/2019 at around 9:20 am at 791 Northmount Dr NW Calgary, AB T2L 0A1 and found a cashier in very short-tempered and rudest I have ever had in any service centre. After filling the gas in my car when I went back to show him that I have 2c discount card, he rudely said that you had to tell me at the first place that you have this card, where I think this attitude towards a customer was not meant to be at all. He intimidated to me by yelling, and when I said that you got to watch your manners, he said excuse me and said you have to watch yours. I think I should have called police on him which I didn't because I was in a big shock that how come someone can treat a customer like this. Watch before you go to this place!