Tamil Nadu Electricity Board [TNEB] — Im complaining about high voltage in my home

Due to high voltage in our house we are enable to use any of our home appliances. The current voltage increases to 260v.For the past one month we are facing this problem and due to which our power supply is temporarily stopped. Our Inverter AC is also switched off automatically.fridge, washing machine, induction stove, UPS and appliances are got repaired due to this high voltage. Kindly rectify the above mentioned problem as soon as possible. please do the needful.