Byjus — need to cancel the course and loan

I have enrolled for byjus ias course and recieved my tablet on feb 14. The following week i recieved my study materials.

On feb 26, i have contacted for discontinue of course as i was not able to spend time on it as i am already working. They told they will arrange a call back.

Later i got a call back from mentor, i explained her my problem. The mentor gave suggestion like to continue for one more month and try to spend time in non working hours.

I was not able to go with the course because of professional issues. Recently i requested for the cancellation of course. They are telling it cannot be cancelled.
As i am not using it and loan has to be paid for which is not used.

I need help in cancellation of the course.