Tamil Nadu Electricity Board [TNEB] — 8 hrs and, still continuing without current

Don't know why the current has been gone in our building and next to us, it is 8pm yesterday when it was off and still now we can't even sleep properly and my one month niece is crying badly due to it. We have also ranged yu yesterday but it went answered lyk a hell, it's 4.40am am complaining abt it coz a human need sleep at night.. Plz look into it