HappyEasyGo — Airline tickets cancelled amount not refunding

I have booked 2 Air India tickets on feb12th 2022 from Varanasi to Vijaywada and through Happyeasygo and cancelled immediately. I didn't get my refund till now. From then I have called the customer care guys 6 to 7 times about my refund and I didn't not get the proper answer. Pathetic service these guys are providing to the public. When ever I had called them, they said wait for 10 to 15 days, other than that they did not have me proper reason for delay.

Order I’d:[protected]
Order date : 12th Feb 2022
Price: 20538 rupees