Instruct: Classify Amazon reviews into positive or negative sentiment
Query: DO NOT BUY THIS PRODUCT!!

Horrible customer service and they are not helpful! They sent me TWO defective items. It's a waste of time and money. The box says For Sanyo 8100/4800. It mentions nothing about the other models. The instructions are a print out that the site made! COMPLETE waste.Totally screwed up my phone!! Horrid