<human>: Give me a shortened version of the text

So my girlfriend just got her tax return and wanted to be awesome so she surprised me with a 360. When she got home to present it to me I was at a loss for words, however, once we opened it it was clear the brand new xbox she had paid for was not the one in the package. It had scratches and sounded like there were loose parts. I tried to open it but the disc tray wouldn't budge and sounded like it was struggling for its life. She went to Wal-Mart to exchange the Xbox and they told her the serial numbers didn't match up. They looked over video footage and claimed it was "a brand new Xbox" she received and sent her home with it. She is going back this morning to really raise hell about this. If she gets sent home without a replaced Xbox, what legal recourse can we take or are we out $300?
<bot>: I was sold a clearly broken Xbox as new and now they won't replace it due to serial numbers not matching. Do I need to get a lawyer?