A buddy I work with just busted a gas station that was ripping folks off an extra $2/gallon! They took pictures and reported it to the manager, he blew them off saying his pumps were right. They went back 3x in 24 hrs and took pictures of each transaction. They went to the police and reported the problem, they called in the state to go thru there books for the last 6 months or longer. Check your receipt for the right amount!