Bangalore Water Supply & Sewerage Board [Bwssb] — No proper water supply

I live in Gunjur with pincode 560087, the water supply is not proper as the person responsible for the supply has no responsibility and won't manage to supply the water consistently and the timings of the supply is based on his mood and his free time. His name is Anand. Though we call him multiple times he won't answer the calls and won't respond. Please look into the matter and do the needful. We are struggling to mange our daily needs kindly help.