HappyEasyGo — Refund not processes

I have cancelled two of my flight tkts and uts been more than 3 months but no tefund is processed from happygoeasy.
Their customer care no are not reachable
Have mailed them on their email id [protected]@happyeasygo.com but have received no response.
Pnr no for Flight 6E6317 and 6E511
Name of Passenger Radhika Bharani