Samsung — Defective handset- received DoA letter, no resolution from Samsung since 15 days

I had pre booked the handset on 22 Feb 2022, and got the handset on 11 March 2022. Few hours later got to found that there is a display issue and immediately sent to samsung service center. Upon checking I have received a DOA dead on arrival letter from the service center on 14th March 2022 and immediately mailed with all the details to samsung and they acknowledged the same on 15th March saying the replacement handset is approved and will be delivered to me within 3-5 working days. Since then they are not replying to my mail and and I keep chasing them everyday to get the status. Not at all response from them. I have invested 1.16 Lakh on the handset and I am scared of getting the handset or the refund as there is no update from. Samsung since 14days. Such a poor service delivery and customer service. I trusted this brand but now my money which I invested on this product is at stake.
I could have gone for a better brand like Apple instead of this.