Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Expensive Headache

The two halves (4500 pieces each) comes wrapped separately in one box. Unfortunately there is no way of knowing if the two halves actually are matching. I assembled one half, glued it to my wall. This took me several weeks! Started the second half when about halfway through I realized that the two halves do not interlock!!! Almost got a heartattack! The Seller and Amazon are very helpful but this is definitely a manufacturing defect so they put me in contact with Ravensburger. Now I have to send some code from the box and prove that the problem with the puzzle is a manufacturing defect. Then maybe they will replace it. Well, thanks for nothing Ravensburger! I want the matching half of the puzzle that are already up on my wall! How can I be certain that the replacement puzzle isn't a dud either? What am I supposed to do with the already assembled 4500 pieces that are on my wall? I am very disappointed and frustrated with Ravensburger! What a fiasco!