insulted by consultant

I bought a top a few days ago for someone as a gift, however the garment didnt fit so i went to edgars in wynberg hoping to return it and get my money back. The consultant was going to return it but needed authorisation from another consultant to give my money back. The other lady Chantel came asking for the proof of purchase and looked at the garment for faults. She then said the top is dirty and was worn so she cant take it back. I then explained to her that no one wore the top bt it cudve gotten a little dirty when my sister fitted it and because the top is white its noticeable to her. She outright told me no it was worn and shes not taking it back. I was so dissatisfied and disappointed to be called a **** when i no i was telling the truth. I want my money back theres nothing i can do with this garment as it doesnt fit.