Airtel is providing cheap call rates to India when you call from a Local Access Number. But the calls never get connected when calling from a Local Access Number. You always get a message " The number you are trying to reach is currently unreachable" . Then immediately if you call from a Toll Free Number, where airtel charges you 6 times more than local access number, the call gets routed succesfully. This is a totally unethical business practice which airtel is using. They lure in customers with cheap rates, but the calls never get routed succesfully at a cheaper rate. So you have to call through a toll free access number, where airtel charges you 6 times more.
This is a total Rip Off. Do not register at airtelcallhome.