negative response from the dealer

I bough a savanna lounge suite from Winston furniture for R69 000.00 in May 2018 and have 2 yrs guarantee. The launch suite wringles and spletes. I reported the matter to the manager, and his number is ********** 955 and he said they will not exchange them. I want them to exchange them or refund my money. my name is Monicca Mothibi at ********** 792.