UPDATE: You might see that they have responded to my review here, I emailed and they never responded! So it's a false message, they're just trying to look like they care and are working on it.
Do not use MakeMyTrip! I've had just the absolute worst experience with them. I booked some flights through them over the summer, one of which was made in-operational causing me to miss an entire international trip. At the time and for months after they reassured and guaranteed me that I would receive a full refund for the flights that were cancelled and that I then missed as a result--after which I was also forced to purchase brand new tickets. For three months they kept reassuring me of the refund and saying they needed more time to hear back from the airlines. I just started applying more pressure and have just found out that I won't actually receive the promised refund, but that I will receive the same trip's tickets with now less than a year to use them as MakeMyTrip took so long to make anything happen. This is a trip I won't be able to make, so it's all wasted. DO NOT USE THEM.
We apologize for the inconvenience you've faced. We understand your frustration and sincerely regret the disruption to your travel plans. Please provide your booking details via email "Head-CS@go-mmt.com", and we'll investigate this matter urgently to find a resolution that meets your expectations. Thanks