Looks like Airtel is realizing the foolishness of their Fair Usage Policy. The company has not removed the policy in its entirety but they have for now increased the data transfer limits on the broadband plans.
New limits as per their website are:
1 mbps till 100GB, 512 kbps beyond 100GB
512 kbps till 100GB, 256 kbps beyond 100GB
384 kbps till 75GB, 256 kbps beyond 75GB
256 kbps till 50GB, 128 kbps beyond 50GB
Are we happy? Nope. The limits remain unacceptable to us. Providing 100GB data transfer limits to both 512kbps and 1mbps users? What are they thinking?