A spar is going on between the Congress and BJP about the alleged scam of Rs.46,000 crore in telecom. The issue relates to the under-reporting of revenue by six private telecom companies during the period between 2006  and 2010. It is the CAG (Comptroller and Auditor General of India) unearthed the scam

The CAG in its report tabled in Parliamant in March, 2016 said the six privete telecom companies, Reliance Communications, Tata Telecom, Vodafone, Airtel and Aircel under-reported their adjusted gross revenue by 46,045.75 crore leading to a loss os Rs.12,488.93 crore to the exchequer.

Now, the DoT is reported to be in the process of issuing demand notice of over Rs.12,500 crore  to the six private telecom companies.         (source: The Hindu)

However we have to wait and see as to whether the private telecos would pay it or not? And also the government action on it.