Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Took this one back

Like a previous reviewer, I did not like the high-frequency motor whine. I asked customer service for noise level information and they replied with "We don't have that information..." Called Hoover Corporate and left a message for the Safety Officer requesting noise levels and an octave band analysis (to determine the frequency of the whine). That was early Nov and still no response.The Hoover does a good job and has a very strong motor (hence the whine) but cheesey attachments. I also did not like the short cord and the location of the on/off button which is very easy to confuse with the cord return button. At the very least the buttons should be of different color. Somehow, I expected more from Hoover product engineering!I returned the vac and purchased the canister recommended by a leading consumer product source as the "Best Buy."