Instruct: Classify the given Amazon review as either positive or negative.
Query: Inverter never delivered

Amazon has no feed back on purchase, and UPS terminal unlisted number unresponsive so I cannot report that I never received a delivery that was suppose to be put in my front door. In all accouts, this is probably a very good device, but since UPS dumped my package instead of delivering it, and nobody seems to want to present an avenue for communications, I find this the only way to communicate. This may well be the end of business with both Amazon and UPS for this reason. The only option left is to stop payment at credit card level, and let them try to figure it out! Grrrr.