TATA Indicom Walky — Billed fake amount of rs 317

Address:

Delhi

My tata indicom phone (walky) has for 2 year free rental plan, But now they have billed rupees 317 without any outgoing calls and usase after 4 months of taking 2 year free rental plan. After making a call to customer care they told me some add ons services was active so u got this bill. But till now I had never activated any add on service to my number.
I will never use and recommend for any tata indicom phone connection. Its a bad provider and they are activating and charging for services which user even do not know.

Prathameshwar