Bajaj Auto — I am complaining for cancellation of my enrollment

Many time I have mailed Byjus for cancellation of my enrollment because my child was unable to understand the things and also she was not take interest to attend the class. Many time I have called and mailed to Byjus regarding this but tey are not responding to cancel the enrollment.
I am very much frustrated with all of this I am also paying emi for the things which I have not used.