finaly they replied
Dear Customer,
Thank you for contacting Airtel Telemedia Services.
We acknowledge the receipt of your mail dated 03 July 2010.
With reference to your below mail for Speed Upgrade, we like to inform you
that double speed offer has been with drawn so to upgrade you need to
migrate to
any other plan, we have attached the available plan details,kindly request
you to confirm any other plan from the below attachment for further
processing.
Please find the attachment of plan details.
(See attached file: Plan_details.xls)
It is our privilege to have you as our valued customer and would like to
thank you for your continued patronage.
We look forward to a long and fruitful association with you.
Assuring you of our best of services at all times.
Yours sincerely,
Shivanand.
Customer Relations
Airtel Telemedia Services
For plan detail below