Flipkart Flight - Refund for Cancelled Flight

My flight of Go First **** from New Delhi to Varanasi on **th June was cancelled. The airline called the a day before the travel and informed me that I will be getting the entire refund of ₹**** from the *rd party. Later on Flipkart Flights called me and said that I would be getting a refund within **days. On July **, I got a notification from Flipkart that I would be getting a refund of ₹**** only. And on the refund summary om the Flipkart app they are showing unreasonable charges such as cancellation charge and non refundable charges. Such charges are only valid if I cancel the flight but here the flight was cancelled from the airline end. When I asked an agent in Flipkart, they are saying absurd things like airline has charged some amount so they won't refund me the entire amount. Please see into this issue