damaged lounge suite

I've bought a lounge suite on the 29th of November 2015 and it was delivered on the 4th of December 2015. Immediately when the delivery people left I've noticed the damage on the two seater sofa. I've called the warehouse immediately but they told me to report to the shop and I did that on the same day but up until today they haven't changed my lounge suite. I've been to the shop twice already with no help and I've been contacting them as well but up until today I haven't received a replacement.