Poor service for return of faulty product

Bought a body Glove cover on Friday, supposed to be shock absorbent but after a little drop, not even 60 cm from coffee table the outer part of the cover broke off. When taking it back they refused to hear me out and just say sorry my problem. If the cover was supposed to be shock absorbent why will the outside break off? And they refused to addist any further! I paid R300 for the cover and then had to buy a new one! But went to New World because I refuse to do any more business or refer anybody to vodacom Menlyn again!!