Samsung — Samsung Galaxy Note 20 Ultra Device activation and redemption

I have purchased Samsung Galaxy Note 20 Ultra mobile on oct 3 with an on purchase offers that can be redeemed.
To redeem the offer, device need to be activated.

We did submitted the activation request but while offer redeemption it always says "device is not activated from indian number"

After all followup with local store as well as ticket raised to Samsung support. Nobody is responding to the tickets. its been 2 months this issue is not resolved. below is the ticket no.

1816807
1754811