Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great concept...fails to live up to its promise

I was ecstatic when I first got it - worked great and provided something I'd been wanting for years. The joy was short lived. Started getting funky background noise. Then it stopped working for days at a time. But the worst was when it started cutting out. I'd be in the middle of a great song, and all of a sudden some hispanic radio station would cut in for 10 seconds. Now it starts up doing that and doesn't stop for hours.I tried all the different settings, channels; moved it to different locations; added an additional receiver to strengthen the signal - nothing. Thought maybe it was where I lived, but when I moved over the summer the problem followed. Customer service is almost non-existent - I got one email response that didn't really answer my question and then never heard from them again.Wish it wasn't true, but this product just isn't worth the frustration. When it works, I love it, but the majority of the time it doesn't.