are the tags still on it? i\'d go back and say it was a b-day present or something and say that you already have a pair of htem and ask if they could give you a credit note. say that you never got a receipt with the pants when you got it as a present...say it was your grandmother or something who didn\'t know to ask for a gift receipt.
as long as you say you just want a credit note, it\'s within their company so they\'re still gonna get the money