Airtel Prepaid
Unable to deactivate GPRS

My phone no is 091-9860348178.

I activated GPRS onb my cell ph and used it for 2 days.

Now when I am disconnecting it, unable to do so since last 3 days.

Airtel deducts 15 rs/day as charges but does not disconnect service.

I send numerous sms to 511 with GPRSDEACT and called customer care but nothing worked.

If such is the service then plz do not provide such services which people suffer.