karthikeyan s 24 October 2019
G.L.N. Prasad (Retired employee.) 25 October 2019
Contact a local advocate and seek injunction, from competent court with the documentary evidence of your title deed, surveyor report, and copy of the complaint made to Corporation for the encroachment. You can also make those authorities that violated /diluted the norms for giving such permission or ignored your complaint as parties.