Delhi Jal Board — irregular time for water

I am living in tuglakabad extension in 29 gali. The frequency of water changed every time and the time of water is also changed without any notification. The water come very third day and next wee every forth day by we have to suffer because we are employee and we are not able to fill our water tank due to changing time of water every time. Kindly let us know the right time and frequency of water in 29galli of tuglakabad extension. I would be highly thankful. The DJB never pick the helpline number.