Their customer service is worst. They are a fraud company. Ive had very horrible experience with their customer service. They will just keep replying to your email/tweet with an apology but do not resolve the issue.
Their customer service folks do not also read the customers email properly and simply just send respond with scripted tempates.
Regarding deal codes/coupons on their site & app; they advertise something to get the bookings and then make a fool of the customer by not adhering to the scheme related benefits. The customer keeps following up.
My 2 cents on MMT - never use this site for your travel bookings
Mouthshut.com - please also have an option of less than one star so the same can be used for make my trip.com.