Airtel — very bad postpaid network

Address: Kolkata, West Bengal, 700039

Internet speed is very bad since last 3-4 days. Very unstable. Unable to do any work properlyfalse promises of very fast 4g internet & stable network. Fix it asap. Or even use for entertainment purpose. There's nothing wrong with my mobile. Others who use airtel in my area face the same problem, my father and aunt for example. Network is not good normally too but still tolerable. Now it's just trash. I get better services from vodafone on my mother's number.