Stoppage of water by society

Dear Sir,

I am living in a flat in a registered society paying monthly bills promptly. I was abroad for many years and returned to my flat in March 2017. We have two water lines to all the flats in the building. viz. One for domestic use(bathroom, kitchen etc.) and other for toilet exclusively. as two reservoirs were built on the terrace of the building .for these use. Due to this many times there would be no water in the toilet.

Therefore, I had made extension from bathroom line to toilet to avoid hardship and water used to come in the toilet from both the lines. There was some problem with the new line and it was opened. Before fixing when I checked the old line, there was no water coming. I made a complaint to the society. However, society has not done anything or replied.

Due to a common line from bathroom, very little water comes in toilet when other extensions are opened. I checked up the society's pipelines. It seems that my connection has been removed by society without any notice or reason.

Can this be considered as Criminal Offense ? Do I have to report to BMC ?

Kindly explain so as to take necessary official steps