Reliance Jio Infocomm — no network in my area can't make calls

Address:

Gautam Buddh Nagar, Uttar Pradesh, 201304

I have recently ported to jio but i don't get signals at my location.
I complained but they did not resolve the issue. They are just saying this will take time as we don't have coverage in that area.
I am unable to receive calls or use the internet. Cannot even make bank transactions as don't get otp because of no signals.
I want to port to another operator but in have not completed 90days in the current network.
What can i do i am not getting network i cannot change my number as it is there in all my bank accounts. I cannot port because they won't let me port.
Either they should provide network or let me port.