Instruct: Classify Amazon reviews into positive or negative sentiment
Query: product randomly stopped working, then HORRIBLE customer service

I bought this router about 6 months ago, and it randomly started not working recently. Once I figured out that the problem was the router and not the internet company, I called Linksys. They had me do troubleshooting steps, and the person who I talked to in India had me repeat the same steps about five times before telling me to update the software. That also did not work, so I called back and they told me I could get a replacement. When I went online to order the replacement, I was told that I had been given an invalid replacement number. I called back, and the person told me that I had to talk to someone else, and basically I've already spent about 4 hours of my life on this problem. It still has not been resolved, and even once they send the router, it will take days before I receive the unit. AND I'll have to pay to send the defective one in. DO NOT BUY THIS PRODUCT. I'm done with Linksys just after this.