Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Glitch calls at random and interferes with conversations

I was initially excited to see the low price, but a couple days after using this earpiece, I started noticing a tone in my ear during conversations. The tone cut me off from the person I was talking to. I would also be driving with the earpiece in and notice my phone start calling the last number dialed. It happens quite frequently. The sound is fine and people seem to be able to hear me clearly when it's not glitching, but the glitch pretty much renders it useless.