Instruct: Classify Amazon reviews into positive or negative sentiment
Query: SLIDE PORBLEM

WE HAVE TWO OF THIS PRODUCT IN OUR CAMP FOR WINTER USE . AFTER ONE YEAR THE FLUSH SLIDE BECOMES VERY HARD TO USE . IT STICKS . I CALLED THE FACTORY , YOU GET VOICE MAIL THAT SAYS THEY WILL RETURN THE CALL AT THERE CONVIENCE . 60 DAYS LATER AND STILL NO RETURN CALL .