Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Liars and Cheaters

Bought a pair of prescription safety glasses through their website and have been having a problem with them ever since. Paid over $185 for the product, the quality is poor, they say I have "transition lenses" (an extra $50) and they aren't. Readers are incorrect. Very dis-pleased and their customer service is the WORST I think I've ever received from an Internet purchase.