Poor service from Noupoort branch Northern Cape

Me and my fiance bought a lounge from lewis about a year and a half ago.In the first month we had an issue with 1 piece of the lounge and had it replaced...After a couple of months we had the same problem with the other 2 pieces and reported it,and was told that they cannot replace it but only fix it....Waited for almost 3 months and no feedback from store,complained again in december 2018 and was told that its a busy time of the year and that they will come back to me..So after 6 months they finally decided to fetch the lounge to fix and its been almost 2 months now that we are waiting the return of the lounge...In the mean time we are paying them for something that we dont use,and have no lounge to use,have to sit on the floor.The lounge broke before 1 year and I feel we should have been given a replacement,am I wrong?And why do we have to wait so long for service and item to be returned?And what if it comes back and break again?Wasint even given a reference number...