Went to a small sushi restaurant a few nights ago and the bill with tax was $ 65 and change, when CC receipt came back added $12 to a total of $ 77 and change. When it posted on my CC statement it was $ 79 and change. This has never happened to me before and do not know what to do or how to prevent it from happening again. For the two dollars it is certainly not worth either calling the restaurant of the CC company, but all of a sudden feel vulnerable. Has this happened to anyone ?