i enquired via email with 1mg technologies about the status of my refund on cancellation of my order on february 2, 2019 and got this reply :-

we have already initiated the full refund of Rs.1373.71 to your UPI account on 02 Feb 2019 having refund id: 20190202111212801300168478421022765.

The refund amount should be credited to the UPI account within 10-14 days. If you have not received the refund amount then we request you to please contact to UPI customer care department along with the