Instruct: Classify the given Amazon review into its appropriate rating category
Query: Horrible product!

I bought this product for my Iphone to be able to charge my phone and use my headphones at the same time. I plugged my headphones up and they do not work when I facetime at all, I thought maybe I had a defective product so I ordered a new one and it does the exact same thing. It also charges very slow. Clearly this product does not serve its purpose.