Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Flimsy product, clueless customer service

Bought it to get DVI output in an older PC.The red color disappeared after just a week of use.Sent it to the manufacturer (which charges $10 for return shipping, just like it is my fault that their product is defective.)The card is sitting there for 22 days already. They just keepsaying that it is in processing. Phone representatives are not helpful at all.Their "lifetime" warranty must be a joke.Obviously, I will never buy anything from this company again.