Sony — Laptop's screen problem

My laptop's screen is damaged according to Sony vaio executive. But how can I break something widout even making a single scratch on laptop's screen. And if it is really damaged than that's only because of the weight of laptop's charger. Coz the only thing that was above the laptop was laptop's charger. Sony vaio people are just trying to ignore this issue. They are not even replying to my emails. And their customer care executives are not ready to listen to me. I'm totally fed up now. The other thing is my laptop's half screen is working and half doesn't so if it is damaged than how other half is still working? This is completely a way of making your customers fool that its broken.