Investigate role of TRAI, its former Chairman and illegal beneficiaries of 2G Spectrum allotment: Rajeev Chandrasekhar writes to Central Vigilance Commissioner and Central Bureau of Investigation Post navigation Probe violation of TRAI Act and dubious functioning by its former Chairman: Rajeev registers formal complaint with Central Vigilance CommissionerRajeev writes to PM, says Kapil Sibal’s ‘Zero loss to Exchequer’ claim is bizarre arithmetic; wants Sibal to withdraw his statement