"There is no effort from the government to crack the whip on BMRC, whose bosses haven't made any extra efforts to chase contractors and get work done. For the contractors, Metro work is a learning process. They make mistakes and redo the work. Estimates have fallen short on the ground and added to the cost. Flawed contracts with incomplete work details have pushed up bills,"
more from ToI here
Sums up everything with BMRC till date!
Atleast the press has finally caught up in checking out what is wrong..