KDMC — Property tax of S1 & S2 A[protected]

I am Anil Pardeshi from Titwala, today 07.12.2020 My complaint is that I am having shop at Titwala where the Property tax is given to me is more than it should be A[protected] having now seperate 9 different member's
I am having S1 & S2 as it's in the name of my Parents
21.23+7.60 mixed i.e.8, 025 rs.+ 2, 873 rs. Value means 80.50% of it per year Property tax started from 2011 onwards as revised plan of 10.11.2011 KDMC bandhkaam parvanghi 606/292
I had payed already 24, 899/- rs. on 05.02.2018 slip no 395094, then 50, 000/- rs. On 07.03.2018 slip no 414157 by cheque dated 25.02.2018 of G.P.Parsik Bank which your staff deposited late Mr. Morkel A ward officer, then I deposited Cash at A ward of 8, 000/- rs. on 31.10.2018 slip number 392331
Totally till date I had payed 82, 899 rs. for S1, S2 of the A[protected]
now I am here to clear all dues along with penalties occurred Abhay Yogna 2020.
The staff had provided me bill of 52, 970/- & 18, 980/- for another then as I talked to your official's of Property tax department they were Very Uncomfortable to provide me the answer and told arrogantly that pay what computer says Screen shot provided to me even that doesn't matches as 60, 439/- rs. +21, 657/- rs. for 2 shops S1 & S2 amount payable at Abhay Yogna 2020 is 35, 923/- rs. & 14, 817/-rs. Here again the Property tax is divided in 2 Parts April to September & October to March with S1 having 6, 464/- two times i.e 12, 928 rs. for Year And for S2 it's 2, 318/- two times i.e 5, 636 rs. For year
Kindly go through the matter and clearify it as I want to clear all and close it
Till date 82, 899/- rs had been paid 10 years of tax calculation should be 9334 for both shops per year 93, 340/- as a Principal amount then what's interest year wise where I had already paid 82.899/- of it
Kindly provide me with the Proper way and clearify it as early as possible if possible till to 09.12.2020 I am also giving it in writing at your main office

Thanks