Samsung returns a phone with damages

I submitted my Samsung S4 Zoom to have the screen replaced. Technicians at Samsung took the phone which needed a screen replaced and returned it with a broken camera lense. ....AFTER 4 WEEKS OF KEEPING THE PHONE. I had to buy a cheap android phone in the interim, because Samsung were moving warehouses and had an apparent burglary so they had a backlog. I accommodated for Samsung's issues by buying another phone to use in the interim, but I will not accommodate for their poor service and lack of professionalism. I received the phone back today and without notice that the camera lenze has been completely broken.