On the https://airtel.in it is published that its customer care number 121 is toll free and customer will not be charged when they call this number, but when I called at 121 after selecting all the predefined option on the call at the point when my call was just about to transfer to support person I got to listen that this call is chargeable INR 0.50 / 3 mins. Its cheating, they are just making revenues through this, no other operator does that.
Im attaching the image of the airtel web site.
Please help to let people know about this cheating.