Consumer Redressal

I an using Tata Docomo Data Card. I am not able to browse the internet using this data card but I am ending up getting hefty bills at the end of the month. It is ridiculous and makes no sense to pay money for getting nothing. I am getting reminders very often to clear the outstanding , and the customer care officials are very rude and adamant in their response. Please provide justice. I want the bill to be waived off or surrender the data card with the refund of data card amount that I have paid.