Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good headphones, terrible cord, zero customer service

I bought these after trying a friend's. When I got them, the sound difference from the APPLE earbuds was absolutely tremendous and I was 100% satisfied. Price to quality ratio was great. Then after a couple months I noticed that the rubber casing began to wear in certain places and then deteriorate and peel off entirely. This spread throughout the length of the headphones, exposing wire and leaving a black residue when I touched it. Apparently this is not unusual for this product. So i called big powerful Sony, thinking they would stand behind their product. The best they could do??? For another 30 bucks they would send me a refurbished comparable set. I laughed in the "service" reps ear and asked for a complaint form. I bought electrical tape and have been making bandages since. I'd like new Sony's but don't' trust them anymore. Might need to splurge for some Shurs.