Help with my X360 headset?!?

Okay so I've had three headsets for my 360 now and for the first week or so, they work like a dream however, after that week the speakers stop working in the headset, so I can talk to people but I can't hear them. In other words the mic works but the headphones don't. Now at first I thought maybe it was just a broken headset, I thought fair enough and bought a different pair. Then the same happened with that set and now it is happening to my current set. I'm really annoyed now so I would love some help. Thanks.