Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worthless Guarantee

This wine opener broke afer opening only a dozen bottles of wine. (Some internal plastic part shattered.) To enforce the 2-year guarantee you must mail a form plus a copy of your receipt to the Netherlands within 4 weeks of purchase, then you must ship the wine opener to the manufacturer in the Netherlands. The shipping would cost more than the wine opener! Caveat emptor.