Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Arrived defective - Probably a return or refurb

Should have known better to open the package when I could see fingerprints on the product through the plastic window. Product would only buzz a bit when trying to open/close the deadbolt. I disassembled it from the the door and same thing - it would not turn the deadbolt, only make a small buzz sound.Based on the dirty fingerprints on the product, I'm sure I received a defect return or refurb repackaged as new.Worse yet, I had to try and reassemble the old deadbolt, which had a stripped screw and now the deadbolt is not very secure.On the plus side, it did seem like a solid heavy product. But now I'm concerned on its quality and reliability.90 minutes wasted and now a trip to ship the thing back. Thanks Amazon! :(