HMWSSB - Delay in giving water connection

We are the tenant of H. No. 29-1465/6, Kakatiya Nagar, Neredmet Secunderabad-56 and after long waiting period and as per our request our owner applied for water connection vide Application no. 2011-7-2356 dated 26/7/2011and paid all necessary charges as demanded and accordingly the HMWSSB issued work order to GB Contractor Mr. AS Raju GB No. 186 on 30-7-2011. The said contractor laid the pipe line but is not connecting it to the supply pipe for the reasons best known to him. Plz help