Free Screen Repair? Not!!!!

You are told by Vodacom and Samsung that you get a free screen repair. After a car accident last week, I took my S6 Edge for its screen repair. There are absolute MINOR scratches on the side of the phone and they now want to charge me R1400 to replace the back cover. I declined, saying I only want the screen repaired, and the pathetic reply from a Refilwe Mahlangu is \Good day Is not possible