Instruct: Classify Amazon reviews into positive or negative sentiment
Query: What an INFERNAL product!

Don't ever buy this item, or else you'll regret. I first bought this from Amazon.com with confidence, which I thought that it would work as expected. But when I received this item, I was definitely dissapointed with the cheapy built quality and unusable at all. Luckily Amazon.com's best customer service had granted me with full refund for this infernal item. Million thanks to Amazon.com for their best customer service.