Poor Quality and lack of service

I bought a couch and in less than 5 months it was already giving me issues. The zip was torn and the couch was sagging. They only took the the day bed and they filled it up as well after fixing it. When they brought it back, the two couches looked different. The daybed looked new while the other looked 10 years old. They collected the couches again and this time they filled them too much to a point where I would slide when sitting. At this point I noticed that they daybed was making funny noises and I made them aware. They brought the couches back but I was still not happy with the job but Sango said I must give it time. The filling will settle, I must just hit it with a fist he said. Four months down three line, I'm experiencing the same problem. This time it's even worse. I can literally feel the wood when sitting on the daybed, the noise is louder and again the couch has sagged. Called them again and two weeks goes by with no word. I called the second time and this time I get told that Sango has left and no longer works there. I'm now told to write an email which no one acknowledged or responded to. I only got a call from the warehouse to collect the couch. I am again inconvenienced with sore back and it's been 5 days with no word from them. I told them on my email that I would like a replacement or my money back but to this day I'm still to hear from them. What a waste of my money.