Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cannot return!!!

We bought this product installed it, but it did not work. We attempted to return this item, but Amazon does not allow returns of hazardous materials. You can order this product and receive it through the mail, but Amazon will not allow you to return it,something about returning hazardous material through the mail. Beware of the return policies!!! We now have a very expensive paper weight. Very disappointed!!!