Bangalore Water Supply & Sewerage Board [Bwssb] — Water overflow from neighbor overhead tank

Sir, I am residing in KHB High rise apartments in Yelahanka new town. In front of our building, a new commercial building is opened and I am seeing overflow of water from their overhead tank. This is wasting natural resources and also putting load in WWTP. I have attached a video and I have spoken to their shops to install level switch but not done since 8 months. Pls help by talking to them and save water