7-Eleven

I've been buying Pall Mall Light 100's here for a long time, sometimes they take coupons off, sometimes they don't, sometimes some employees scan the cigarettes', sometimes they punch in the prices manually. The other day the day manager punched in the prices manually & charged me $10.75, no coupon entered, today I bought 2 more packs, the newer guy scanned them, with a coupon discount & charged me $8.50. This is the price I usually pay with coupon discounts. That's a big difference for the older guy to charge me over $2.25 more on the same cigarettes'. I hate being short changed since cigarettes' are so expensive anyway. They never give me a receipt. Can you check into this for me, I like the store because it's closer to home, but I don't like getting over charged with certain employees.