I once bought a beats pro white (yeah, stupid, I know, but it's been 1,5 years) and when I got them, one of the earcups was really loose (they're ment to swivvel, but this was.. Different)
The next day I noticed the left one could only go one way (like it should be) and the right one could go both ways for some reasons, and without even touching it I could make it move (holding the headphone in different positions). I shrugged it off for some reason, and took it along with me to a family member's birthday, back from the birthday it was even worse, so I was about to contact the guys I bought it from (Tonecontrol, a dutch online store), and wanted to put it safe back in the box. Guess what, the earcup fell off. I tried to put it all back together but it looked quite sloppy.I contacted Tonecontrol and they wanted me to make some pictures, so I did, they told me it was hard to see (it looked like a child of 3 years put it back together, but OK), so I send it to them.
5 Days went by (and I didn't have any headphones to listen music with) and I recieved a mail. "Yeah it looks like you just gave it a huge smack". Even if I would've done that, the description said "can survive the hardest treatments of a DJ life, I'm just a regular kid who wants to listen to music. So I was really angry at them and said "Well if I gave it a smack, here should be scratches or anything, and I bet you you cannot find any". Nope, they didn't find any, so 6 weeks(!) later, I finally recieved another pair.
They are still fully functional till this very day :)