This is very bad move by Airtel ,few months back I hv 6months advance rental pack of mega and its valid till 31st of dec with free extra few days as of offer,but when december month's last week came my vilidity of my pack changed to 21st of dec this trick by airtel to rob customer money by cheating us so I tried complaining many times in everyways as possible but this s#*t airtel costomer care not gets agree give me refund my validity so I hv complaint to Bloomberg Tv's program Fight Back and know what they called back to solve my issue with airtel dth even they showed it in tv and at last my issue got solved thanks to bloomberg tv india