Instruct: Classify a review into positive or negative sentiment.
Query: AMAZON SHIPPING POLICY

I DISCOVERED HOW DIFFICULT IT IS TO CANCEL AN INCORRECT ORDER...I WANTED CASSETTE TAPE AND ORDERED CD'S BY ERROR...CONTACTED AMAZONTHE SAME DAY TO CANCEL AND WAS INFORMED THAT THE ORDER HAD ALREADYBEEN PROCESSED AND I WOULD HAVE TO GO THROUGH THE INCONVENIENT PROCESSOF RETURN...I KEPT THIS USELESS BOOK...BUT..I WILL BE VERY CAREFUL OF ANY FUTUREPURCHASES FROM AMAZON...I BELIEVE THAT YOU SHOULD HAVE CANCELLED MYORDER, WHEN CANCELLED THE SAME DAY..I DO NOT BELIEVE THAT IT HAD BEENSHIPPED....RICHARD PREVOST