Ibibo Group / Goibibo — I am complaining about refund of my air ticket

I had booked air tickets through goibibo for my journey on 7th may 2020 mumbai-chennai sector by vistara airlines. Since the flight was cancelled due to covid 19, through much persuasion vistara airlines had agreed for full refund. They have informed me that they have sent the papers to goibibo on 13th may 2020 for full refund of my tickets. However goibibo is not responding properly as a result of which i have not received the refund amount till date. I am a senior citizen and i very rarely travel by air/train. I would therefore urge you to please look into the matter and arrange for refund of full amount at the earliest. When vistara airlines have sanctioned for full amount of refund, i am not able to understand as to why goibibo are not releasing payment. The pnr no. Is v5eyxt. Thanks.