Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't waste your time!

I bought this today, plugged it in, set the time, put a Pyrex measuring cup full of water in it, heated it up...and worked fine. It sat there untouched for TWO MINUTES. I turned it on to heat up a plate of leftovers, and it didn't work! It went beserk! It turned on w/o any buttons being pushed, the keypad locks up...and it won't turn the heat on, and it won't turn itself on! I can't even reprogram the time. Have to unplug it just to turn it off, as it goes around and the lights are on. So much for a cup of heated water, that's all we got for this piece of junk! I'm returning it back to TARGET! Yup, it won't be Emerson!