HappyEasyGo — refund for flight tickets

I had booked flight ticket from happy easy go for mumbai to goa. I had requested for cancellation 1 month prior departure. I had paid 1630/- for per ticket and the cancellation fee for same ticket was 1530/-. When the base fare for ticket is 1200/ how can the cancellation charges be more than base fare amount. My pnr number for ticket is h9lv8a.
I request kindly refund base fare to customer and stop making customers fool. When the customer is not using your service and cancelling prior 25-27 days company should consider the same.