Instruct: Classify Amazon reviews into positive or negative sentiment
Query: <<<NO WARRANTY>>>

My parents bought the Songbook for me in Dec. 2009 as advertised on Amazon.com by Ace Photo Digital. As far as I or my parents knew, the Songbook was bought new and came with the manufacturer's one year warranty.Fast forward to Sept. 2010 (10 months after purchase) and the Songbook stopped playing sound through the speaker.Tivoli has denied warranty coverage saying that my parents did not use an authorized dealer.Ace Photo Digital is claiming they are an authorized dealer.Amazon.com has stepped out of the picture and will not help me either way.TERRIBLE CUSTOMER SERVICE BY ALL THREE COMPANIES! I AM NOW OUT A PRODUCT THAT SHOULD HAVE BEEN BACKED BY THE MANUFACTURERS WARRANTY. DO NOT BUY FROM AMAZON, ACE PHOTO DIGITAL, OR TIVOLI.