The worse support and refund Policy

HI EveryOne,I have booked a flight on MMT before COVID19 in march , the flight was with Vistara Airline, and flight got preponed by 3 hrs, hence when I called Vistara CC they have agreed to cancel the flight with FULL REFUND, and I thought I will get the full money from MMT also but my bad the MMT didn’t refunded and as the situation got worse due to covid I was not able to connect with MMT several time I tried to call but no response neither any direct mail or they even not responded, all last some how I manage to send email them they given automated reply that they will process I am eligible to get refund, they were showing that I have completed travel on their so called self management page.
After so many mail and proof I send to MMT I finally got money refunded into MMT wallet that due after 500 deduction.
Till date I am not able to get call back and direct communicate with Customer service they just disconnect on IVR call

The refund I got is not the full amount and it should be in original payment mode not in MMT wallet. kindly give me full refund, Why not one is taking call in MMT, when there is an urgent case, I think this will be the last transaction for me with MMT utterly disappointment, no call back no support just looting the money. pathetic