Jet Airways — makemytrip wrongly made the flight booking, where i already have the same booking. i want jet airways to cancel my ticket and give me full refund

On 24th september i booked jet airways flight ticket for9th jan from yatra.com, details-
Jet airways - 9w-2474
Airline pnr - xvtpob
Amount charged-8266/-

At the same time when i am just checking the same flight charge in makemytrip, suddenly they debited my money and booked the same flight ticket, but i didnt proceed to payment even not put the opt also (Though being mmt customer my bank details i keep save there.) details-
Jet airways - 9w-2474
Airline pnr - fiujio
Amount charged-8416/-

I immediately informed both mmt and jet airways to cancel my flight tickets and give me refund, coz if i cancel i will get very less amount. After several follow up i have not received any positive response yet.
I want airlines to cancel that ticket from their end and give me full refund. I will escalate this issue unlil i get justice.
Regards