Lounge suite

I bought lounge suite in March 2015, the goods were damaged and the store exchanged them with another damaged goods. I lodged more than 4 complaints but still up to now there's no solution. I have paid for 12 months already and left with 24 months to finish my instalment. The challenge now is no one is prepared to assist, the lounge suite is peeling off and has developed cracks which I have already reported. Now I have been told that the manager that was assisting me has resigned.I have been advised by the sister store to do a follow up immediately as the shop has challenges and can close down anytime. Kindly assist.