Samsung — Didnt give promised watch with the phone

Hi
I purchased my Samsung phone on 18th March, they said they would send my watch at home .. I never received the watch, the store got closed and now the customer service saying that offer is expired

After taking 1.5lac rs they refuse to give me my watch
I have all bills, plus the second wave also came so I could check with the team earlier

Pathetic service n rude staff
I said I can submit my hospital forms of having COVID too but they not ready to listen

A. It is the store fault that it didn’t send our watch or say there was a time to redeem
B even if there was a time to redeem, second wave of covid happened ..how do we follow up with serious COVID situation at home