Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Terrible customer support

I had to return this product to Altec Lansing due to a minor defect. So far it's been a month and I still don't have my earphones. The worst of it is that they lie about when they'll be sending a replacement. My three customer service calls have all yielded the same assurance that a replacement will be sent immediately. They said the same thing today. I've rarely come across such terrible customer service and despite the excellent audio quality of these earphones, I will never purchase another product from Altec Lansing.