MakeMyTrip India — hotel reservation

I had booked a resort villege retreat, mahabalipuram on 28th dec 2017. As there was death in the family i had reached makemytrip customer service to change the dates to april 21st, 22nd. Customer service had spoken to hotel and was told that they will change the dates. The request was closed, i had called the customer care immediately on jan 3rd 2018 and informed that i didn't get the revised itinerary. I was assured that i will get the revised itinerary.

Customer service while communicating mentioned that look for change of dates as the hotel is not agreeing for refund which was ok to me.

As my travel date was approaching, when i reached mmt i was told that there was no change in the dates done and request was closed.

I have paid rs 13, 849 which is not a small amount.

Please help either to get the refund or change of dates.