Vodafone India — Money fraud

Address:

New Delhi, Delhi, 110012

I, rohan singh marwah, recharged my mother's vodafone number +91-[protected] through paytm for rs 65 on wednesday, 13/7/16.
As per the app interface it was a simple recharging process of talktime without stating beforehand that it would be a net recharge instead of talktime recharge.
I wished to get a talktime recharge.
Now the company declines to convert the recharge and after numerous calls and rejections from different customer care representatives, one of them says that only 50% can be refunded.
I wish to ask the procedure and also question as to why they refund only 50% when when i don't intend to use their net service and never had.

I simply want either a whole money refund, because i haven't used the net service which they activated, or an equivalent recharge for talktime.