Reliance Jio — Device not picked up and not refunding Security deposit of rs 2500

As per the jio fiber plan if we are not happy with the service we can return the instrument and can claim full refund after one month. So I put cancellation request after 29th day on call i.e. on 06.07.2021. On that call I was told to submit jio fiber router and device before 05.08.2021 and if due to my fault if I am unable to submit the device, then installation charges of rs. 1000 will be forfeited, that is, I will get refund of Rs. 1500 only instead of Rs.2500. But despite several complaints in jio customer care till date no one has come to pick up the device and every the jio customer care gives 1 week time to resolve the issue. On asking higher authority contact no., they simply reply that jio customer care no. Is the only no. And due to COVID pandemic they are unable to transfer the call to higher authorities. there person didn’t comeback to collect the device. So it is Jio's fault who is not responding on time.

Also, I talked to engineer who installed jio fiber, he is asking for CO no. and on asking, customer care is not giving CO no. saying every time that CO no. will be messaged to you but in 20 days despite several complaints I have not received any CO no.
Also, while installing jio fiber connection engineer had not installed the connection properly due to which whole set up of jio fiber fell down and my LED TV got damaged.
Who is going to take responsibility of all these losses including mental agony.
Therefore, I am bound to take legal action.
Please help.