Have opened a support ticket as-well, no reply yet though.
Anyways if they ask me to ship back the item to them then it would cost me more to ship the item back to them then the orignal price of headsets as the price of shipping from india to HK is very high. So i just wanted to share my experience with mp4nation.
According to the latest sale email I received from MP4Nation they're celebrating a holiday there and won't be opened again until Oct 3rd.. During that time support tickets may not be replied to or any orders shipped until they re-open.. You should get a reply to your ticket shortly after they re-open on the 3rd.. Good luck.
Here's the message in the email:
MP4 Nation office will be closed from today and will reopen on Wednesday Oct 3rd. Whilst we are closed support tickets may not be replied to and orders will not be shipped out till we reopen.