Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Product never worked correctly

I bought two these when I had my office remodeled. The contractor drill holes through the granite and I installed the Belkin Hubs. They worked intermittently for a while but are completely dead now. I’ve tried getting a hold of Belkin – what a joke. In the past I have always found that the Belkin product line was very good but this time it’s left a very sour taste in my mouth!