Byju's — Assurance of classroom for entire period of enrolment but not provided. Hence I want refund .

I have purchased byju's classroom programme for my two child under sibling scheme. The counsellor who visited my home had assured to provide online classroom programme for Class 8 to 10 (3 years) for my son and class 9 to 10 (2 years) for my daughter. But when they were promoted to their next higher class, their class has not been started and on calling the Byju's representative refused to continue the online classroom any more. It is notable that My instalment of 7 month already deducted and i don't want to continue such fraud study programme further. So I need to stop the further deduction as EMI and cancel the programme given to me.