Builder fails to fulfill the agreement with site owner

   We was given a sight to builder for devolpment in narasaraopet andhra pradesh.  As per the agreement time is over still he was construct only one floor out of five. When we approach him he was not given any satisfied answer.  Now i requested you which method is better to solve the issue out of court because if we proceeding to court the time taken second is there any agencies to solve the issue whith in short period, finally which is the better way to solve the issue in short period