Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Knobs broke off

I bought 2 of these dimmer switches and on both of them, the knobs broke off within 3 months. Not having a receipt, I called Hunter where it cost $20 to have these replaced. They are mailing the replacement knobs to me, but I am afraid the same thing will happen again. Dimmer works fine, but knobs are extremely shabby. Eventually I will wind up replacing both of these switches due to this problem.