Byju's — Cancellation and Information

Please let me know why i am not getting call to cancel the course.

my first EMi is deducted, i have made many calls to Byjus customer and they
are saying, they will call me back, but no one is calling to cancel the
course.
Please take back your learn station and cancel this course, i do not want
to be charged on second EMI.
Please please please have some one call me and cancel this course.