HappyEasyGo — Amount not refunded of cancelled flight ticket

I have booked flight from Chennai to Varanasi for[protected] which was cancelled by airline on[protected]. I have called happyeasygo many times. Every time they tell that amount will be refunded within 1 week but it has been 4 months and amount has not been credited. Flight ticket, cancellation information and present status of refund has been attached for your information. It has been very difficult for me to call and ask for refund every time. Please help in this regard.