HappyEasyGo — Refund not processed from 3 months

The below flight was cancelled by the airline in the end of August 2022. I have received confirmation from airlines that they refunded the money to Happyeasygo in early September.
Despite my several attempts to get my refund for this ticket, I've not received my money even after 90+ days.
Now, we are not even able to reach them on any of the customer support numbers. They are not even responding to our emails.

PNR is OD1FHN
Delhi to Patna
1. Dr. Arun Kumar Sinha
2. Ms. Poonam Sinha

Please help us to get our money back.

Regards, Anshu