Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: poorly functioning machine

I have had this unit for about 7 months now and it has not functioned right the whole time. I got it from WOOT and everything I have gotten there has not worked right. Maybe that's it. The Omnifi company just sends me back to WOOT and seems to have no interest in this dud of a machine. It likes to just stop at times, has to be rebooted often to function at all.I'd can't use it much. Like the concept tho.