I always stop by Circel K to buy drinks and snacks. It has happened 3 time over the last 2 months that when I redeemed electronic coupons, the people behind the counter said mean things about me while I left the store. I have heard "we should stop her from getting free stuff" or "coupons bring cheap people here" etc. Regular purchases from this store is ok, but I get insulting comments from store staff when I use a coupon. I am sure there are other customers experienced the same thing as I did .