Indian Institute of Space Science & Technology
No refund due to cancellation of air ticket

I cancelled two air tickets, which were purchased from Makemytrip.com using my credit card, on 4th February. But still I did not get any refund. I have talked to the customer care several times, email them but of no output. Please suggest me what should I do?

Company: Indian Institute of Space Science & Technology
Country: India

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