Dissatisfied client

I have recently moved in to a new house, I bought couches at UFO Bloemfontein that were delivered on the 1st of August 2019, after the guys who were installing the couch have left, I noticed that the couch had a dent if I should call it that way, I reported the matter to the lady who was assisting as with the purchase, I even sent her pictures, Her name is Yolanda, she promised that she will take up the matter with the complaint manager, until today I haven't heard anything from them. Those couches are too expensive for me to just let it slide. What annoys me is the fact that I'm not taken serious. No feedback or anything from them.