I purchased gas (15.8 gal) and car wash (Ultimate $14), totaled $55.13. Gas price should have been 20 cents discount with car wash purchased, but I was charged full price of $2.59 per gallon. Also, car wash machine indicated that the service I received was "basic" car wash (worth $8) instead of "ultimate" (worth $14). I told the clerk and he refunded me only $3.16 cash (difference for gas discount with car wash). He said I already did the car wash so he cannot give me the rest of my money back (~$3 for the difference between $14 and $8, minus the cash he refunded me). I told him their machines are defective (both gas pump and car wash vending) and he did not acknowledge me. It appears that he was aware of it (defective or deliberate adjusted).