INCORRECT DELIVERY

I ordered a couch from makro when it arrived it was NOT the one on their advert. It us badly made and looks bulky. I requested them to swop it for the correct one. But I am ignored and told it was a ONLINE SALE. So who is responsible for that? I paid Makro not a online unknown dude. The place where the couch was delivered and us standing waiting for MAKRO to decide who what or when they goingcto do something about the mistake is not being tiled from Monday. So what do I do now. I can't pick the thing up or move it as I am too old and too sick and tired of Makro. I have had enough of their mistakes false advertising and promises their CANT KEEP.