Instruct: Classify the given Amazon review as either positive or negative.
Query: Don't buy these!

I bought these earphones and they lasted about 6 months until the left plug just stopped working. Stupidly, I went to buy them again and got the ones with the mute button - even worse. The button is really sensitive to pressure and the just touching the wires makes the sound cut in and out. This happened after a few days of buying them. Now it is about a month after buying them and they hardly work. I've read reviews on other websites and I am not the only one this has happened to.