Customer service is just a game for Game

My dad ordered an Xbox one S from game stores on the 3rd of July and more than a week ago they told him that it has been dispatched and everytime he calls they tell him the order is on it's way. Today when he calls they tell him that they are out of stock and that they made a mistake. How does that work? For more than a week it is on it's way, now all of a sudden it's out of stock. Give our money back in order for us to order the Xbox from a company that cares about customer value