Deductions of balance made in name of some packs

I am a Vodafone prepaid user having number 9730422467 from Maharashtra. There are some charges deducted from my Vodafone balance in the name of some packs as mentioned below:

1. Rs. 99 deducted for DNLD-D2C_NDTV_VALUEPK_99-NDTV
2. Rs. 49 deducted for DNLD-D2C_NDTV_VALUEPK_49-NDTV

Such charges were deducted 3-4 times and i also talked to Vodafone customer care representative. They said to me that Vodafone is not responsible for such deductions and cannot do anything for me. They are saying that i might have downloaded some paid app or clicked on some site which has deducted my balance. During this deductions my internet pack was activated. The representative said that any site or application can deduct my Vodafone balance without any notice and Vodafone will happily let them deduct it and will not take any responsibility.