Dell India — Dell denied for whole unit replacement

I purchased dell inspiron 5418 on 04.05.2022 at Dell himayathnagar store, Hyderabad telangana. I didn't used the laptop atleast for 24hrs in 3 months. It's having issues with keyboard and screen. Few keys in laptop are not working and the monitor is also having one white line. I gave complaint to dell 10.08.2022. I requested dell for whole unit replacement but they denied.

If I want part replacement in 3 months o[censored]se I should have chosen a second hand laptop but why there is a need for a new one?

I got to know the truth that they will display 1 yr warranty blah blah blah etc but the truth is they will sell the defected products and in warranty they will replace parts and will make consumers fools.

In my mail I requested so many times to raise the fresh request but every time they are forwarding the same mail as denied.

Hence I request your Good self to help me in getting the whole unit replacement.