lounge suite broken after only 2 and a half years

I bought a lounge suite from house and home in Bloemfontein on the 18/09/2012. it is called a Cellini 2m 3pce corner unit. I am a regular customer of the branch and am not happy with the quality of the product. I logged a complaint for the frame of the lounge suite after a year and they fixed the one chair. the frame is now totally messed up, I logged a complaint again about two weeks ago as I can not afford to buy a new lounge suite every 3rd year. I was contacted only to be told that the lounge suite only has 1 Year warranty. I was not told this on the day of purchase. it is only me and my wife using the suite. no children jumping or playing on it. as we don't have any children. I bought it on credit and when I logged the first complaint I received good service, after a year and 2 months I settled the account. it is as if they only helped me the first time so that they are sure they will receive their money. Now that the account is settled there is nothing being done to my situation. the first lounge suite was just as bad and we returned it. I am really not happy with quality and service of the Bloemfontein branch. I need some advice to what to do to get my problem solved