Byju's — my emi refund and cancellation of my emi

I am Raghu M S, I had taken Byjus coaching classes for UPSC as I desired to have the best career. So I heard BYJU's is good, later I joined the institution. But later due to some issues I was not able to attend the classes. Later I asked for cancelation of my classes and refund my EMI payment for the same. I has first put mail to Byjus team in the month of December first week. But still today I have not received my EMI back nor my EMI cancelation is done. I have put several mails more than 60 plus mails to them. But not even till now they have taken action. They reply telling that it will be done. But don't know when.
Kindly resolve my issue. Or else I have to take this issue very seriously and complain to higher officials.
Not even single person takes initiative there to do work. But still my EMI is getting debited from my account.
The persons who where in contact with me were None:
Daniel
surya dhanush
pavan
From bangalore.

Resolve the issue earliest...