Asus India — asus india extended warranty not received

I had bought an asus laptop extended warranty on 26.09.2018 from http://www.asuspromo.in/ during the offer period and paid inr 2000 for the same. When contacted them over email "[protected]@asuspromo.in", got confirmation email from asus that i will receive the warranty extension code by 16.01.2019. But since then, i have tried calling them on "[protected]", but they never pick up the call and don't even respond to the emails sent to them on "[protected]@asuspromo.in". Therefore request you to kindly look into this matter.