Cielo is full of mould

Wish I can give it no star. Bought a R10000 bunkbed. All pretty and everything. A year later both mattresses appeared to have mould beneath. Both mattresses lie on top of a flat wooden plank. No ventilation whatsoever. One of the Mattresses i had to throw away. When i contact cielo they said is not there problem. No one complained about this. Now it is my problem. And my kids health is not their concern. How do you sell bunk beds without ventilation and think according to them nothing will happen.