Indigo Airlines — Regarding cancellation charges

Website:

Goibibo

Requested sir/madame,
Happened on 20th of september, 2016.
I am a student studying in chennai and i was supposed to book a flight from chennai to delhi for 7th of october, 2016 but by mistake i booked it for 7th of november, 2016. as soon as i realized this, immediately i cancelled my tickets which costed rs.4461 and i received a mail that only rs.1736 will be the refunded amount which is not even 50% of my paid amount. this is not fair on the part of the airline. this happened by accident and i don't think this amount is viable enough since i cancelled my tickets just within seconds of my booking. my booking id is m6ex9upvp under the name of palak sanan booked through goibibo. i want an immediate action from your side and want my valuable money back on a fair basis. if not possible to refund the complete amount, i request you to book me the same flight on the same day i. e. 7th of october, 2016 at 8.35a. m.in the morning. please look into this matter and find me a best possible solution to my problem at the earliest possible
Thanking you,
Palak sanan.