Instruct: Classify Amazon reviews into positive or negative sentiment
Query: unpleasantly surprised

Received the item with a small dent on top which I thought nothing of, shouldn't affect the performance I thought. But when I plug everything in, the machine just makes a whirring noise, no water spraying, no movement of the dial. After 15 optimistic minutes, I gave up. Returning back for exchange. Crossing my fingers for the next box.