<prompt> Human: A group of coworkers and myself went out to lunch earlier this week, and long story short, had one of the most abysmal waiters I have encountered in my life. Unwilling to fix things, pushy, lied about up-charges, etc, in addition to the food being terrible. I was REALLY taken aback, and ended up tipping lower than I normally would. The waiter seemed like the kind of guy who would do something funny with the billtip, and sure enough, when I check my statement 5 days later, he had added an extra 1 onto the tip.Now, Im not sure how to proceed. Its only a dollar, sure, but this kind of thing is absolutely unacceptable. Im tempted to go back to the restaurant and speak with a manager, but Im not so sure that would stop something like this from happening in the future. Should I contact my bank? It feels strange to want to do something like this over a dollar, but its kind of the principle at this point. Any advice?  <response>: Look at it like this OP, and dont feel bad at all! Doesnt matter what the amount is, fraud is fraud. It was 1 with you, who knows how many other dollars with other customers..this could be a common occurrence with this employee and he could have potentially defrauded hundreds to thousands of dollars from unsuspecting victims over the course of xx months or years. 