Avadi Municipality — Reg - SUC charges

Hi,
I am from RC Complex, Nehru Bazaar Avadi. I received a property tax notice from the municipality few days back. I have been quoted 4times higher as SUC charges from my property tax(For 6 Months). I don't understand how it is calculated and decided to meet the respective revenue officer along with a formal letter. Unfortunately, I didn't get a proper response. I could see there are huge differences on the amount that my neighborhood have received.
Moreover, the street is privately maintained by the building owners every day. however, I am ready to pay a minimum SUC charges that I am supposed to pay government for Clean India scheme.
Please find attached the copy of my request letter.
Looking forward to pay the property tax without any delays.
Thanks in Advance