MakeMyTrip India — not allowing flight reschedule even when mentioned on their webpage

Their webpage is showing I can reschedule my flight free of cost due to corona. But when you actually try to reschedule, it asking money. It's really ashame. In this panic situation also they are making money. Trying call customer care since 1 week they are not taking any calls, airline is asking to go through Mmt. What can I do now. It's totally waste of money. Really these are frods. At time of booking they will 10000 timesbut now when booked they don't even care to pick a call. Please give me refund back or reschedule flight. They hv mentioned this on their page web.