Idea/gprs — GPRS

Dear Sir,

I used GPRS service (Rs 25 per day scheme) from IDEA for the mobile no. [protected] from 06 july 2009.
On 12 july 2009 (between 13:00 to 14:00) I called to IDEA customercare to terminate the service. In reply I got a SMS from IA-52799, in this SMS they mentioned the service reference no. 91999125 & time of processing by 14 july 2009 at 10:00 am.
Because they mentioned 14 july 2009 at 10:00 am. so I used the GPRS for some browsing & download.
Without informing IDEA deduct ~ Rs 600 from my balance.
I want to back my money/balance whatever IDEA deducted.
Please help me to come out the situation.

With regards
Atul Kumar
[protected]