Makro sold me a used a hoverboard

i bought a Hoverboard for my daughter online from Makro. this item is used. the box first of all showed poor handling, but because the box is just the packaging i ignored, when i opened the box a ***** fell off. when i looked i realised the board has shoe prints on it. when i took it out the wheels show the board has been used already. I am livid. why sell second hand items without disclosing. this is meant to be a birthday present. this is definitely the last thing i buy from makro and i want my full refund. this is nonsense.