Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Defective device twice

When we first got the hot chocolate maker, we were delighted with it. The froth was fabulous, and it was so easy to use. However, after about 2 months, the little ball bearings inside the magnetic disc began to come out one by one. I called the 1-800 number listed in the manual, and the customer service representative was very helpful. We received another disc to replace the old one. We used the machine again for about 8 months when we had the same problem. As the machine was no longer in warranty, we continued to use the disc after all the ball bearings were out of it. The machine continued to work, and we didn't taste any difference in the hot chocolate. After a few weeks of using it without the ball bearings, we began to hear a terrible noise, so we discontinued using it. I was really disappointed. We did use the machine almost every day, so I don't know if we used it too much or not. The hot chocolate was wonderful; I just wish the machine would have held out longer.