This is the most common occurring catastrophe with a bluetooth headset..

BROKEN CLIP!!!!

It literal freaks out how cheap the clips are made even of most expensive headsets..

Here is the simple fix requiring no pains and no money(paper clips are lying in every drawer of offices)

Step 1: Things Required:-

1)paper clip
2)Bit creativity to adjust the clip as per your model.

Step 2: Opening the Paperclip and Twisting It

1) Open the paper clip then put it through the holes on your headset(all preinstalled clips are holded by some sort of pivot joint)

2) Twist the clip back on the surface of ur module to get "spring action" of clip..