Makemytrip - Automatic Cancellation of flight ticket

I've booked a round trip from Trivandrum to kolkata. The onward journey is on **th may **** and the return is on **th may ****. I've cancelled only the return ticket on **th April **** and makemytrip website also did the same. When I went for web checkin for **th may flight on *th may, it stated that Onward journey is also cancelled in Indigo site. But in makemytrip it was showing confirmed. I got perplexed and called the makemytrip representative, he said that there is a problem with site and hence asked me to book a new ticket and promised the refund of the amount in ** hours. They have dragged the issue for a month and now they are saying everything is fine and there will be no refund. Kindly help me to get compensation for the automatiI've booked a round trip from Trivandrum to kolkata. The onward journey is on **th may **** and the return is on **th may ****. I've cancelled only the return ticket on **th April **** and makemytrip website also did the same. When I went for web checkin for **th may flight on *th may, it stated that Onward journey is also cancelled in Indigo site. But in makemytrip it was showing confirmed on *th may. I got perplexed and called the makemytrip representative, he said that there is a problem with site and hence asked me to book a new ticket as there is little time for the flight and promised the refund of the new flight charges in ** hours. They have dragged the issue for a month till *.*.**** and now they are saying that everything is as per procedure and there will be no refund. Kindly help me to get compensation for the automatically cancelled flight on **th may, from these fraudsters as I'm made to book a new flight on *th may for **th may **** again.cally cancelled flight on **th may by themselves from these fraudsters as I'm made to book a new flight on *th may.