Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Ordered NGK but got Bosch instead!

I think the NGK is an excellent product and I ordered 6 NGK PZFR5D11 spark plugs via Amazon. However, what I got was 6 Bosch Platimum instead, useless to me. Makes me lose confidence in on-line purchasing, and a waste of my time.