Furnicraft mattress of poor quality

I purchased a double bunk in August 2018. To start off, the double bunks had glossy paint marks on as if it was touched up after it was sprayed. Luckily they attended to it until I was happy, At the same time I ordered 2 mattresses which I collected after setting up the double bunk which I was told was of better quality than a mattress purchased earlier in the year. Well I purchased it and decided to give it a chance, bit when you have tween kids sleeping on it, they cant really tell you whether it is ok or not. 9 months later one can feel the base when you sit at the end of the bed (which only happened by chance as I went to sit there) and after advising HO they told me I was suppose to advise by 6 months yet there is no T&C on the invoice,. word or advise don't waste R700!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!