Sdmc — Wrong demand for property tax arrears

Address:

New Delhi, Delhi

I received notice number sdmc/a&c/sz/rkp/2016/18815 dated 19.3.2016 from the dy./asstt. Assessor and collector, assessment and collection department, south delhi municipal corporation, in respect of flat number b-8/6117 vasant kunj, new delhi 110070, informing me that a sum of rs. 1, 68, 015 as on 31.03.2004 and interest @1% per month is due on account of property tax on this property, and asking me to deposit the amount within 30 day.
I had taken the possession of the above property from dda on june 20th, 2003 only and paid property tax of rs. 3773 on september 14, 2004. I have been paying all property tax every year since then, and no dues have ever been shown to my account. I have submitted copies of all relevant documents and have been writing to them again and again, but they do not even look into the issue and the facts but just send a same letter again.