Thanks Bhavye
Update:
Contacted EaseMyTrip and had to cancel the ticket manually from here as well.
₹225 (Convenience fee while booking) + ₹300 (For cancelling) = ₹525 was deducted per pax.
After this, in few days got an email from SmartBuy regarding the refund automatically. Did not have to call them.
Got my points back in the voucher that was used and when the voucher expires, the points will be credited back to your account.
The cash component was credited back to my CC.
Hope that helps someone
Thanks