Worst customer service Adidas Outlet Woodmead

Adidas Outlet Woodmead has the worst customer services as I bough my son soccer boots on black Friday only find out they don't fit him the size was small i returned the following day to return and they told me that they cannot change them so I had to buy the fitting size. I then returned to get a refund and they advised that its the shoe was dirty and they cant take it.