Instruct: Classify a given review into positive or negative sentiment.
Query: I hate my Treo 600

I bought the phone in May and have had numerous problems ever since. (1) I cannot synch my address book; (2) I have to constantly add contacts to my address book because I keep losing them (making problem number one all the more painful); (3) The phone drops calls daily, despite the fact that I am calling someone's land line from a stationary position; (4) I cannot release my auto lock if I stop using the phone for 30 seconds; (5) I have stripes instead of solid color and (6) Verizon Wireless customer service offers the worst service I have ever encountered - they are rude and barely speak English.