Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Their installer and support is the worst!

I wasted an hour of time this morning. I spent 30 minutes trying to install it, another 30 minutes on hold (never did get through). Finally saw the reviews here, and got it to install using safe-mode.I would try and get a refund, but I'm sure I'd end up on hold for another 1/2 hour.