Happy Easy Go - Happy Easy Go not reachable and Money not getting refunded

Happy Easy Go is not refunding my amount refunded from the airlines. Due to Covid ** Pandemic situation I was unable to fly on **st May **** from Kolkata to New Delhi. Go Air has supposed to provide me a ***% refund as they cancelled the flight themselves. They have emailed me with the credit Note and confirmation that the money is pending with HappyEasyGo. However HappyEasyGo informed me that they need my cancelled cheque as they cannot process the refund amount directly. In accordance to the discussion I attached my cancelled cheque and bank details and emailed them. Neither they have responded to the email nor they are responding to the calls anymore. It seems that they are not in a mood to provide the refund and they want me to forget about the money. I want my refund.