How to proceed legally if the builder is not giving possession

I along with 4 other apartment owners filed a case in consumer court against a builder for non-completion of the project. We had booked the apartment in 2014 but still the project is not completed. There is no lift/generator and other amenities. Flat cost is 45lk. We hired a lawyer for the same. He had initially sent a legal notice and when there was no reply for the notice he proceeded with the filing of consumer case. The lawyer sent the notice individually and the case has also been filed individually (but the grievances are the same) As per the lawyer, the case was filed on 11/7/2018 and matter stands adjourned to 25/10/2018 to await notice to opposite party. From sending the legal notice to the filing of the case it has also already taken us 6 months. And still, he is not giving us a concrete timeline. So my question here is: 1) Is there lawyer giving us correct information/representation? And usually does it this much time for the case to be ad