First obvious questions - did the seller tell you it was in mint condition? and what did they say about the condition? If they told you it was mint, you should consider sending it back - though I guess it varies with whether you bought it from a retailer, or via ebay or from a private sale, in the latter case you are probably screwed.
There again, how much are you bothered about a couple of scratches? I couldn't care less, but the fact that you posted this suggest that you are!!!