Tamil Nadu Electricity Board [TNEB] — I need to change my wire to underground cable

Address:

602024

I have two new eb connection in my home separate meters.
The connection has been given through wires by crossing the road on the top of the post connected to top of the house. The wire are looking very low from the ground.

So i need to change my wire to under ground power cable.

What is the procedure? And where i will contact. If there is any request form please let me know.