Tamil Nadu Electricity Board [TNEB] — power cut in velachery

We are at golden avenue velachery. There are frequent power cuts and low voltage for the past 3 weeks. Yesterday night the power cut happen at 12 and full night no power. We don't know when the power came in the day as till morning 10am power didn't come. Today again night 10pm power gone. When we call eb no one is attending the phone. It is very difficult to stay without power the whole night.