Instruct: Classify the given Amazon review as either positive or negative.
Query: NAVIGON PIECE OF JUNK

DON'T BUY THIS C**P. IT'S THE WORST GPS EVER!!!!!!!!!!!! I HAVE TO CHECK GOOGLE MAPS BEFORE I LEAVE MY HOUSE, BECAUSE THIS JUNK IS TAKING ME CIRCLES, THROUGH SHOPPING CENTERS. IT'S THE MOST FRUSTRATING WOORTHLESS DEVICE EVER. AND NOW YOU CAN'T EVEN REACH CUSTOMER SERVICE.