Delivery team stole something from my house...

Bought something and paid to have it delivered, when the delivery team dropped off the item, one of the team decided to take something for themselves out of my house.

They all deny taking the said item that is missing however it is nowhere to be found and did not grow legs as prescription sunglasses cannot grow legs.

Makro have been terrible in dealing with the matter so far and the delivery company and employees even worse, if they return the item by 5pm Thursday 15 October then I don;t need to open up a police case.