[Que]

Mediabsolute, you sell players as 4 gigabyte but you know they are not. That is giving false information, intended to sell more. Everybody knows by know there are no 4 gigabyte mediaplayers, at least, the cheap ones you sell are not 4 gigabyte. But you keep selling them as such.
That is called scamming. The fault is yours, the loss should not be the buyers, he also should not loose money for sending the player back, because YOU are selling 2 gigs as 4 gigs. It is normal to pay for your own mistakes, not let someone else pay your way. Reason says you will have to pay a full refund, plus the cost for sending the player back to you.
But this all seems to be a setup to disencourage people to do anything about it, because they will loose money and end up with empty hands, paying for your misbehaviour. Unprecedented in any bussiness.
People, buy from official stores like uxcell.com, at least you can be shure about the memory size you order, and get fair shipping quotes.