Seriously, they're taking you for a ride.
Certainly not, i have reproduced their reply below.
Dear Mr. Raghu,
Greetings from Idea Cellular!
At the outset, we thank you for choosing Idea as your service provider and your continued patronage of our services.
With reference to your mail, we would like to inform you that the unbilled amount is your usage charges from the date of Bill generation till date which does not include any monthly rental and free usage discounts. Upon the completion of billing cycle, bill will be generated with monthly rental and necessary discounts as per the plans opted by you.
Please be informed that your unbilled amount is Rs.797.22/- and your defined credit limit is Rs.800/-.Hence, we request you to kindly make the interim payment to avoid outgoing barring.
However you can pay an additional deposit (refundable) to increase your credit limit. The same will be equivalent to the deposit or average usage whichever is higher.
Further, we inform that you current GPRS pack is GPRS 98(1GB) pack and not GPRS 98(2GB) pack as we do not have any such plans.
It has always been our constant endeavor to provide best of services to our valued subscribers.
Should you require any further clarification, please do call us on 9844012345 or you could also choose to e-mail us.
Thanks & Regards,
Prem Kumar L
Customer Service
________________________________________
Idea Cellular Limited - Karnataka
Visit us at: www.ideacellular.com
Alternatively you can also call us on 9844012345 to know more about IDEA
Idea -“The Global Customer Responsiveness Award Winner in Telecom”