PCMC — Discrepancy in property tax bill

Dear sir,

Greetings.

This is regarding my mother's property tax bill -
Zone no.- 8
Ward no.12 &
Consumer no. - [protected]

Her name is alice louis gabriel & she has the concession certificate for women for 50% samanya kar benefit.

When i paid the tax on line on 22nd june, the total amount was rs. 781. After paying this amount, i am getting another bill of rs. 685.

Why am i asked to pay this extra amount?

Please look into this matter and do the needful.

Thanks & regards.

Raphael gabriel