Yesterday I bought and sold some items at a semi-local video game store. The items were a slim PS2 and NES and some accessories including 3 memory cards, and I bought a SNES, 2 PSP games and a DVD. Tonight I looked at the receipt and noticed that I had only been paid for 1 memory card. This is the second of 3 times I have had a problem in about 2 months, the first being an underpayment when I sold a spare Final Fantasy IX and the third being an over charge on the DVD I bought during the same transaction, I caught both of those before leaving. I do not intend to name the store in question as I want to give them a chance to correct this, I have gone there for over 10 years and it has been only the past 2 months that I have had a problem. If this isn't resolved are there any Los Angeles area authorities that oversee this type of stuff?