Instruct: Classify Amazon reviews into positive or negative sentiment
Query: does not work

My headphones have a lot of static noise and the sound will cut out all together. They do not do a good job of detecting when to turn on. So I decided to return them for repair. When I went to ship them I was supposed to get discounted shipping through UPS but this link did not work. I called customer service about getting the discounted shipped and they kept transferring my call. So I sent the headphones without the discount and payed $20 instead of $10. I got the headphones back quickly only to find they still did not work properly. I am so frustrated but will probably not send them back to Sony because I have little confidence they will repair or replace them. Shame on you Sony.