Wrong parcel delivered

My daughter ordered a curtain and received a duvet cover. The service that we get from Woolies and their customer services, are terrible. They first want to find out who is the quilty party when the wrong parcel was dispatched. Before that they are not going to exchange the parcel. I emailed the barcode of the wrong parcel, a picture, but still I am waiting. How long I am going to wait. It is almost 10 days now.