BCCI has never banned any player for chucking.
Pragyan Ojha was removed in late 2014 only to be cleared in early 2015. The same time Ajmal was banned. After his remodelled action Ojha's bowling became ineffective leading to his ouster.
Umpires have not reported indian bowlers fearing their corporate owned indian media's defamation campaign like steve bucknor and if BCCI finds out of favor match officials it does'nt allow the player to tour. How Harbhajan toured can be seen as part of this gameplan by the board.
BCCI is a major reason cricket around the world has gone down, its bullying tactics has affected the game mostly fellow asian member Pakistan, who once formed part of the asian bloc with them, as Indian citizens don't wish to see Pakistan playing cricket. Talent-wise India is no USA or China with an emotional hyper fanbase who compare R. Jadeja with Wasim Akram