Ibibo Group / Goibibo — incorrect refund amount

Address:

5th Floor, Good Earth City Centre, Sector-50, Gurgaon, Haryana, India - 122018

I recently cancelled a flight directly with the indigo airline which i had booked via goibibo. Indigo sent me a mail stating the details of the refund, which i 11966/- but goibibo refunded me 4952/-.
Now i am not able to reach goibibo customer care, their number are either not working or are claiming the refund is settled and redirecting me to their website for further discussion. Their website in a similar fashion is claiming refund has been done and everything is settled, i also tried their chat-bot "gia" but it in the end says, it cant solve my problem and asks me to go the same page which led me to gia in the first place.