Lodha Group — changing additional amount for possession palava phase 2

Hi,

I had booked the flat in 2016 and the possession was promised on feb'17.
However after delaying the possession for 1.5 years, they came up with new charges of 10000 rs. As advance electricity deposit for four months.
These charges are no-where mentioned in cost sheet and not in agreement deed as well.
The explanation for this advance electricity deposit is they have not installed the meters and buying electricity from some vendor. And the meters and proper connection will be done in some days.
However even after 4 months, they are still giving excuse that the meters are not installed and i must pay the amount to take the possession.
This is deficiency of services and forcing us to take the possession without proper electricity connection.
They are threatening that if i don't pay the demanded money, they will not give the possession.
I seek legal help in this scenario and would like to make a complaint in the consumer court.
If anyone has the same issue, we can fight together.
My mail id is [protected]@yahoo.co.in / mob no. [protected]
Please help me in this regard.