Musafir — Less refund on the ticket booked on aug 2016 for eticket number v9dy4z having reference m-37wdx

Website:

www.musafir.com

Hi this is regarding the indigo flight booked via musafir from ixb to bbi on 28th august 2016.
I just wanted to enquire why is the cancellation charge so much more when the indigo cancellation policy states that only 1200 will be the cancellation charge for the ticket which is being getting cancelled before 1 month.
M-37wdx is the reference number, v9dy4z is my e-ticket number.
And for the flight fare of rs. 5115 i am getting a refund of rs 2615 only and moreover the ticket has been booked before 4 months.