MakeMyTrip India — refund and credit not received

We, mr. Khaidem niladhaja singh and huidrom premchand singh booked a flight ticket of indigo for 31st march2020 from delhi to imphal through makemytrip.com. Due to corvid 19 we are not able to travel. Later mr premchand want to travel on 16th april20, so we separated the ticket through indigo webpage, still he is not able to travel. But the price was 6717rs per person later when mr premchand rebooked it was 4718rs only which left rs.1999/- to the airlines. Now we all want to rebooked the flight for 4th may 2020, so we contact the airline which is indigo. They informed that all credit has been uploaded to the agent which is makemytrip and the remaining rs1999/- was also refundto them. Now i received only 4717rs as credit voucher from the makemytrip.com and the rest i haven't received yet. The first pnr number was em6p7n and later splited into em6p7n and mql65b. Now i am not able to booked my ticket and the fare price is also skyrocking. Still there is no refund of 1999rs and credit of 6717rs. I have send numerous message through facebooked since there is no telephonic contact and still no reply.