Instruct: Classify Amazon reviews into positive or negative sentiment
Query: TV Ears didn't work

Unfortunately, the TV Ears did not work. We set them up just like the instructions on the TV Ears website indicated (as they did not arrive with instructions of any kind), charged them for 24 hours, and voila! nothing. The company we purchased them from were very nice and gave us a number to return them, but it still cost over six dollars to send them back. We haven't yet received a refund, but they said we would...