MakeMyTrip India — Worst website or app usage

I have recently done a booking of flight through makemytrip, believe me this is the last time i m gonna book through them. I m in UAE and there is no option for the changing of flight through website? are u serious. Fine when we call toll free number, there is no option to proceed to talk to an assistant. How can somebody do the service when its required and left with no other choice to write this. I still cant believe this, i have even written an email to customercare but no response. Somebody needs to solve this matter.