BYJUS LEARNING PROGRAM - For cancellation and refund of learning program

We started learning program for my son, with ** days trial period and paid **,*** for tablet. They said you can any time cancel if u paid for tablet. And remaining **,*** with EMI. Within ** days we decided to cancel the programme because of some syllabus issue and informed them. They asked for ist EMI and insured us to refund till cancellation. But now three months and already paid two EMIs but the are still asking for next installment till cancelation and calling and mentally torturing us. we are really very feduo please help us. We cannot bear them anymore. They are also threatening with court case.