Ibibo Group / Goibibo — Goibibo is refusing refund

I booked fight from Goibibo for Chandigarh to Bangalore for 30 April 2021, however there was lockdown so I opted for open ticket and reschedule flight on 18 Jun 2021. unfortunately flight was cancelled from vistara end and when I talked with them then they told me that they will full refund my money by agent (Goibibo). when I checked on Goibibo they are showing refund will be credited by 07 jul to 11 July 2021. Today I called vistara customer care they told me that your refund was already transferred to agent Goibibo on 05 July 2021. however when I am calling Goibibo customer care and i am getting message as

Dear Asheesh,

Thank you for calling us for *refund related information* for your Cancelled Flight booking.

Your Flight Booking was Cancelled on 11 Jun and there is *no refund* applicable on your booking.

Pathetic service by Goibibo. I almost booked every flight by this site but now I am realising that these are only thugs. I lost my hard earn 9000 and still no response from customer.

please book your flight directly from airlines site.