Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Dont work like they say

I bought this product to my girlfriend and dont work.She use it with the other product "AcneFree Severe Acne Treatment System, 1 system" and nothing happensI write a email to this people and never answer me.Dont waste your money.(sorry for the bad english)** SpanishCompre este producto para mi novia y no sirvio para nada.Lo uso incluso con el otro producto de ellos llamado "AcneFree Severe Acne Treatment System, 1 system" y tampoco.Le escribi un correo a esta gente y nunca me respondieron.No pierdan su dinero en este producto.