Delay in construction - want money back

Mr Vivek Singh, First issue a legal notice through your advocate for recovery of Principal amount + interst+ damages etc., by stating as you said in query and then file a Case in Consumer Forum, I do not know whether Consumer Forum is there in Ghaziabad or not, it is speedy redressal when compared to Civil Courts, and as far as consequences of bank loan is concerned, if you stop making payment, definetly bank will take legal steps, like 138 of N.I.ACT, etc., against you as you might have already issued PDC'S in favor of Bank, in my opinion it is better to intimate bank by way of  letter stating that you have taken legal steps against the builder. or reschedule the loan and close the loan account before taking any steps consult your nearest advocate and discuss your issue.