Planet Spark — Refund of money/Cancellation of classes.

Hi

I have joined my kid in the one year course of Planetspark and took loan from Credenc. Every month Rs., 4524 is getting deducted for the same. Now i wanted to cancel the classes and asked the Planetspark to stop the ECS deduction. They promised to stop the ECS if I pay Rs., 25890. So I paid.
But instead of cancelling the subscription again ECS is also getting deducted every month.
Please help in stopping the ECS