Apple India — Faulty service of macbook air

Address: Kolkata, West Bengal, 700054

I have a macbook air, 2015 model, serial no. C1mrtpb8h3qd, purchased on 28.06.2016,
The charging port of my macbook was loose so when i had kept my macbook on charge, the charging cable had slipped in the keyboard and on closing the screen of the macbook there was damage to the screen of the laptop appearing as vertical lines on the screen on switching on the macbook.
When i reported this to the service centre, they called it an accidental damage to the screen and said it would not be covered under warrenty. Further i contacted the apple customer care, thet filed my complaint (Complaint no.[protected] but said they cannot help me with this problem.
Hence i am writing to the apple company as i strongly believe that the damage caused to my macbook is clearly due to manufacturing defect, because of which i am having to take unnecessary hassles, and this should be covered under warrenty.

Thank you.
Dr. Jyoti gupta