I had a similar experience, I sent mine in for repair, got it back 3 weeks later with no repairs done, and scratches all over it, sent that back, got the wrong color one back saying it was mine, the next day I got mine in the mail still unfixed with a piece of paper that said something about the repair job being completed...still was scratched, driver was still blown out and a new crack in the headband, sent that one with a note and my proof of repair order literally taped to it along with a bigger note saying DO NOT SEND THIS BACK TO ME UNFIXED, IT IS UNDER WARRANTY AND YOU CRACKED THE HEADBAND
got that one back with only the driver replaced, no fix in the headband. I spent an hour harassing a rep about all of it and was transferred to a manager who said he would handle the situation, 2 weeks later i get a package of headphones that were a extremely used and smelled like smoke and b.o.
Monster never fixed the issue and I decided to quit and give up, lost a hefty amount of $ there form their stupidly overpriced beats. Im no monster fan either, I think i posted this story of mine a while back here on head fi >.>