I am airtel user in 2009 to 2015 this period many cost loss in airtel very cost 3g 2g packs and voice calling pack and more cost of any another packs and airtel customer care helpline any time busy very singnal problems.and the airtel is not open network I hate him one time airtel was 70 rupees takeing my money I asking what problem to my account he say to u r useing 4g .not avabile 4g in my area??????