Calcutta Electric Supply Corporation [CESC] — Single phase supply - high voltage fluctuation

Address:

700137

Due to single phase supply to my electric post, we are facing high voltage fluctuation. We can't run any electronic appliances.ac is not working and fan is also not running at full speed. 3 phase supply is provided to the immediate nearby lamp post but in my lamp post there is single phase supply. Several complaint docketed but still no action is taken by cesc representative.
My consumer no - [protected]
Customer id-[protected]
Lamp post: 72/13/0/1/3