Disconnection of water supply

IN my society, a shopowner's (who also resides in the shop) water supply was cut by the managing committee (MC) on Aug. 28, 2016.  And after I intervened another person's supply wasn't cut.  I advised the shopowner to lodge a complaint with the Mumbai police and also helped him to lodge one on the internet. The police however, despite him going there thrice sent him back and the last time, just put a rubber stamp.

Would much appreciate some suggestions how to go about it as this man is not rich enough to employ advocates etc.  As of now the supply is still cut and the MC maintains that they did it under the advice of the BMC and following notices.  The shopowner has no dues but each month the vindiction of the MC results in arbitrary elements in his bill.  Thanking you in advance.