I hate Airtel (broadband) because of:
1) Anti-consumer measures like the Fair Usage Policy
2) Horrible pings to the rest of the world.
3) They spend much much more money on advertising / marketing than is needed, rather than spending money on improving their infrastructure and services. e..g the obscene amounts of money spent on the new logo, F1 etc.
4) It is 2013 and we are still only in the 4-8-16 Mbps region.
5) They have forgotten their roots (providing excellent broadband and customer care which led to their massive popularity by word of mouth).
Just to add to the 4th point, even with those speeds they are with terrible FUPs.