How can I address issues with coaching institute refund and management

I enrolled in the English Special Batch at a coaching institute in Mukherjee Nagar and paid INR 14,000. Despite preferring online payment, the staff forced me to withdraw cash from an ATM. They refused my refund request due to irregular classes and poor management, claiming no action could be taken against them. I've filed a complaint with the Mukherjee Nagar Police Station, but no action has been taken. I seek your intervention to address these issues.