Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Don't buy Trimax

Ordered two trimax resettable bicycle locks, one worked, one didn't. Contacted the company, they emailed a warranty claim, I filled it out and emailed it back, didn't hear anything from them. Emailed another copy, still nothing, as if they dropped off the face of the earth. If you want a bicycle lock that works, don't buy Trimax.