Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointed

I wish I would have read the previous review before I purchased this textbook for a class on my Kindle. Two weeks into the class I realize the chapters are not matching up with the syllabus. I ordered this textbook on my Kindle after I ordered the textbook through a vendor on Amazon and the book never came. Amazon credited me back that purchase but still put me in a time crunch. Thats when I realized the textbook was available on Kindle only to discover 2 weeks into the class (And over $40 later) that it is not the correct textbook. Amazon, you should double check your ISBN number before linking together two books that are obviously not the same.