Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor design

We purchased this 14 oz./370 ml glass window hummingbird feeder and it does not work. We have tried every which way to make the suction cups work and they do not stay on the window. The instructions indicated that the bracket would detach from the bottle but that was not the case. We will not be buying a product by this company again. Also, the company makes it impossible to reach them on their stated web address.