Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Dissatisfied

I have had my Forerunner for 2 years and it has worked about 20% of the time. I sent it back after trying to get the tech support to help. They had me send it in and they said they sent a new one back as a replacement. I was in the second mile of the Louisville 1/2 marathon and it quit again. Since then I have tried to power it up and nothing. Charger shows it is powered, tryed the methods of unlocking provided in the handbook and still nothing. Bought a Nike+ last night for my iPod and it worked wonderfully this morning.