Jio — JioFI security refund not provided

Hello
I have taken a connection of Jio fiber for trial in March for a month for which I paid Rs. 1500. After cancellation within 30 days I had to get this security money back. I cancelled the trial within 30 days and after that I received 500 rupees, when I called customer care, all they are saying is remaining 1000 rupees refund is getting initiated. I have already made complaint 10-12 times but getting same response and no refund. Please help me with the issue. I posted the same complaint here earlier also but no response was received. Please resolve the issue.

Jio fibre registered number- [protected]
Jio fibre trial connection taken month- First week of March
Cancellation month- April First week