Still no help regarding my broken lounge suite

This is now the second time I am complaining about my broken lounge suite on this complaints platform. I bought the lounge suite almost 2 years ago from Joshua Doore, Welkom branch. I complained on delivery that the arm rests were sunken in, to which the response to me was that 'that happens while stored'. Not even 2 months later I complained that the 'leather' material was pulling loose at the seams. Still, to this day, nothing has come of this. With interest and insurance over a 24 month payment plan, my lounge suite comes to R18 000+ . I have never missed a payment, yet the service that I have been receiving from them regarding my customer satisfaction is non-existent. My last monthly instalment will be 1 June 2016. I want my lounge suite to be replaced, as it is still under guarantee and insured for the 24 months during payment. I am a very unhappy customer and am tired of fighting for my customer/consumer rights.