On Sunday, January 9, 2011 at approximately 1900 hours, I visited Old Chicago with a friend. We ordered foods and drinks, with the amount totaling $29.78. My friend payed 20 dollars in cash, and I requested to the clerk/server to charge 9.78 to my Visa. He later returns with the receipt and 22 cents. I asked why was he giving us 22 cents, and he said because he charged me 10 dollars instead. I didnt understand why he did such a thing, but I left with the 22 cents and gave him no tip. Today, Thursday, January 13, 2011, I reviewed my bank statement and saw 20 dollars had been deducted for Old Chicago. I immediately went to Old Chicago to speak with the manager. Upon arriving and explaining the situation to the manager, the manager made it difficult to believe me unless I showed proof of receipt. I finally said, that he as a manager should have a copy of it; he then went to look for the copy. After a 15 minutes wait, he arrived with the copy that showed a scribbled and darkened 10 dollar tip and a "supposed" 20 dollar total. I say "supposed", because the 20.00 amount was not recognizable as a 20 dollar total. I explained to the manager that the pen that I used to sign the receipt and the pen used to darken the 10 dollar tip and 20 dollar total, were two different pens as well as not my handwritting. The manager did noticed the difference, but walked away saying that the 10 dollar over charge would be returned to my Visa within 2 to 3 business days, without apologizing about the situation or assuring me that the clerk/server would be reprimanded. I am very disappointed and cheated that someone had tried to forge a different amount of what was put down on the receipt. I work nearby and had used Old Chicago as a place to meet friends on Sunday nights. I can definitely say that I will advise my friends to meet elsewhere.