Instruct: Classify Amazon reviews into positive or negative sentiment
Query: My watch doesn't work (screen)

I disapointed with my purchase (Casio Databank Digital Calculator Black Mens Watch EDB610-1C). Tell me what I have to do. My watch does't work well. The screen only appear in the half of it.I hadn't had time to complain about it, but now I am doing.I'm going to send it back. Tell me what is the procedure please.I hope an answer as soon as possible.Fatima