Bad perfume

my husband bought a perfume from truworths called Antonio Banderas the Icon and this perfume only last for approximately half an hour and the smell goes away we paid R1000 for the perfume and when we went to truworths to tell them about it they didn't want to return it because they said it was over a moth and my husband only used it after a moth for the first time the bottle is still full and i dont know what to do with it