Mondelez India Foods / Cadbury India — Dwight voucher pin not received

I got a swiggy voucher of 50 Rs in exchange of 150 nothing coin from cadbury 5 star in their do nothing campaign but they did not sent the voucher pin without which I cannot use this voucher on swiggy. I tried to contact them on phone and email but I got no response through them. So I want to request them from this platform to please provide me the voucher pin, so that I can use it on swiggy.