Dear Mr. Pramod Rehani,
Greetings from Tata Docomo!
We would like to inform you that, as per our records we found that your plan from July to September is 0.5Gb@500 and during this period the bill has been generated as per your usage and there is no billing has been happened and later your plan has been changed to Photon Plus 2GB@750.
For any further assistance please mail us at Customer.firstname.lastname@example.org or you can call us on 040-66570232.
Thanks and Regards,