Samsung — Unable to redeem the free buds offer

I have pre-ordered the Samsung galaxy tab s8 plus, 5G device on 21st Feb, 2022 on the website and for this they have given a HDFC cards discount (instant) of Rs. 8000 or free Samsung buds free for the tablet purchase. I received the tab on 8th March and asked in their live support about the free buds offer and when to redeem it. They said me after delivery, I can redeem, and then on 9th March I asked how to redeem they said me to wait for 72 hrs after putting in the sim and in the app I was not able to see the redemption option as they mentioned in the live support. And asked again but got same steps to redeem. In my FOR YOU, they didn't show me the offer and I emailed them the issue and they said to wait for 24hrs and my issue was not resolved. Pls help me with this redemption issue