Instruct: Classify a given review into positive or negative sentiment.
Query: This is not what I ordered Amazon!

I had been using Tetra easy balance with NITRABAN for a long time and it is a great product which is why when all the stores in my area stopped selling it I was upset and wondered what I would do to maintain my aquarium wihtout it. I was happy to find it on Amazon.com and ordered a Big bottle of it. After waiting almost a week to receive it I found that they shipped me the same thing that the stores in my area are now carrying, which doesnt work. I do not understand why when I placed the order it said it was "w/ Nitraban" but they instead shipped me something else. This sucks.