[Resolved]  Samsung — Display colour issue

Address:

27-3-83/2, Official colony, Road No 1, Srinagar , Gajuwaka , Visakhapatnam-530026

I had bought a samsung m30 mobile phone - model sm-m305f/ds (Sl. Rz8m92dsvqk, ordered on amazon website 1.10.2019 and received after three days..

I used the phone 10 months no issue suddenly one day pink mark started left side top corner and day by day its increasing pink blue and black colours and display going to dark mode went to gajuwaka samsung service centre and logged complaint ticket no ; [protected] they checked external part everything fine no cracks and no break also and they opened my mobile back side cover and took the snap shots and fixed in front of me after they told simply inter break is there and its not covered amc and told please discuss with samsung customer care team for further process.
Customer care team response very poor and holding the call 30 min to one hour but no clarity for mobile repair and asked to written letter what was the my mobile issue and same the provide but they simply denied my request and cut the phone also
I called many times but same response please check with samsung service team and resolve my issue.

Outside no issue they simply told internal damage free service not applicable.

I am wondering why cannot sansung replace the handset... It is only 1 day old... What is the guarantee and warranty?

Please help me as to how i can get a replacement as it is a new mobile.