internet post can be -- in hours, you want to behave the way you treat others. a professor decided to share a lesson when a chinese restaurant had the nerve to overcharge him by four whole dollars. trace gallagher has more from our west coast newsroom, trace. >> the bill came to $57.35, which was four dollars more than harvard business school professor benjamin ed lman was willing to pay. hadn't updated the new online menu to reflect higher prices. so the professor who claims to have consulted for companies like microsoft and the nfl started sparring with the owner of the restaurant over e-mail accusing him of intentionally violating a massachusetts consumer protection law and saying that he was entitled to three times the amount of the overcharge writing, and i'm quoting, please refund the $12 to my credit card or you can mail a check for $12 to my home. well, the owner said he was more than happy to return the four