Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Didn't work for me

I bought this pump after my first child was born. Although I (and then my husband, and then my mother) read the instructions thoroughly, took it all apart and put it back together, and called the 800 number for help, no matter what I did, I couldn't even get one drop of milk with this pump. I ended up buying the Medela pump, which was fantastic from the start (and fast!). For me at least, this pump was a waste of money.