Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Most worthless item I have ever owned

I purchased my first hot water dispenser because my wife enjoys hot tea. Within one year it leaked profusely. Tank was replaced under warranty. About two years later the second tank leaked. I foolishly purchased a replacement because it was out of warranty. That one lasted a little over a year (note, this is good Denver city water and not well water which could be corrosive). We have now moved to Branson, MO and the home had an Insinkerator hot water dispenser which the owner said that he had to replace just before we purchased it because the tank leaked. Now, just under two years later I find that this tank also leaks. I find it amazing that they can continue to sell this defective product!