Airtel — termination of postpaid connection

Hi,
This is to inform you, that i would like to terminate my postpaid connection as i have moved to usa, i moved in may and i called up the customer care to cancel my connection but i can see it's still being active n am getting bills. For some reason my gmail was not in snyc, when i corrected tht then i could see the bills and was shocked. Am getting bill for the service which am not availing since june.
Therefore, its my earnest request to you please do the needful as earliest. The details of my connection are as follows:
Name: shashikala
Airtel no:[protected]