Airtel some time cheat you without internet pack you charge normaly from us 10kb/10paise or near about , I open my data at 2g setting for 30 second and just browse facebook not doing any download or any thing after 30sec I of the mobile data Rs - 45.00 gone from the main balance I called immidiate to customer care and ask what happen they told me that I download a big file and data usage timing is 10 minute and they simply refused my complain for money back .