Instruct: Classify the given review into positive or negative sentiment.
Query: Brittle Plastics and Poor Support and Service

The plastics used to manufacture the head set are too brittle for everyday use. Construction and design of the bridge piece between the speakers is poor. My unit cracked under normal use. The unit suffers from a manufacturing defect.Customer service and support from the manufacturer are non-responsive to very poor at best.I could not get a refund of the purchase price from the reseller (not and Amazon purchase) nor could I get assistance from the manufacturer in acheiving a full refund of the purchase price.This item is not a recommended purchase in my opinion.