Impossible to return faulty goods

We bought a camera from Homemark online in December as a Christmas present. It didnt work properly and so I returned it in early February. It took over 2 months for the camera to come back and is worse than when we gave it in (cant even press the buttons) . I have been to store and called head office at least 6 times requesting a refund or exchange (Fsiso/ Vusi/ Zubeida) and no one will call me back. It seems as there is no intention for anyone to respond and even in store they wont entertain any complaint. I see there are a number of similar online complaints (naming the same culprits - namely Zubeida). Does Homemark have an unofficial (and *******) policy not to refund in cases where they have sold faulty goods?