Instruct: Classify the given review into positive or negative sentiment.
Query: DOA: defective item received and no replacement from the vendor.

The earbud came in defective: the 3.5mm plug is too thick (the middle ring portion) to fit in standard 3.5mm audio socket. When I tried to use a bit force to fit it in, it damaged my iPod's port! Failed to request the vendor for replacement or refund. Manufacturer's warranty service requests $6x2 round trip shipping that is double the cost of the item itself. Please beware the poor quality of the item!