Instruct: Classify a review into positive or negative sentiment.
Query: Customer Service are JERKS

I bought this player based on past reviews. But the version of it that came with an external power supply was not available, so I wound up having to buy power supply somewhere else. NO MATTER WHAT POWER SUPPLY (other than batteries) I USED, IT WOULD NOT RUN OFF EXTERNAL POWER. When I called customer service, they said tough luck. You have to buy power supply from them, or they don't give a rip. Don't buy from this company unless you are willing to buy all your accessories from them as well.