BSNL - CellOne — Excess Billing

Address:

Maharashtra

Few months ago I got very high bills first Rs. 2900/- approximately and the Rs. 7000/- approximately. I went to BSNL office and was told that I had sent SMS about 2-3 years ago to start 3G services. Since my usage was not there earlier I didnt get high bills. They showed my usage summary (I have not used as using 1.5 -2 GB on cellphone is rather difficult Nokia C6) I pad the same and gave application to discontinue 3G and confirmed the same 3 days later. 3 month went by properly i.e. Rs. 1200/- odd bills & now this month they show usage of 3.2 GB and have sent a bill of Rs. 8000/- approx.
I dont have such heavy usgae of the net. Even my broadband connections seldom exceed 1 GB usage.
Please tell me how to sort out this matter.
Regards,
Ashutosh Gupta
[protected]
[protected]@gmail.com