Alliance — no connection since last 30 hours plus

Address:

J534 Paharpur Road 4th Floor, Kolkata, Near Central Bank of India, Kolkata, West Bengal, 700024

I am facing connection issue since last 30 hours. Every time i call the customer service team they only respond saying zone is down due to power issue. They don't have any further updates neither bothered to put themselves in a customers shoes to feel the pain.
My alliance registered mobile is [protected]. My contact number is [protected]. No connection from 6pm 3rd jan till now when i am writing this (4th jan 10 pm).