Refund

I bought a dress at woolworths a week ago.When i got home i decided that i didnt want the dress anymore because my husband didnt realy like it .I then went to a Woolworths store at Sammymarks in Pretoria to return the dress.When i got there the cashier that was assisting me did not want to refund me because i didnt have my American Express debit card which i used to buy the dress.She then called the department manager who was unkind and informed me that i must first bring the card.The till slip does not state that i must bring the card to be refunded, even the note that they have written on the wall regarding refunds does not say anything about bringing the card that u have used to purchase an item.She then went away for about a minute and pretended to have received an instruction from the store manager to not refund me.I am very unhappy about the service that i received,i am a loyal customer of Woolworths and i have returned items before and no one has ever asked me to produce my debit card before i get my refund. If this is really how it is done, then this policy should be reviewed because it is such an inconvenience .