Rto Delhi — registration of my car

Address: Mall road New Delhi, 110085

Hi my name is kamal raj, I bought a car in 2015 and that was 2hnd, since 2015 I have been using that car .i registered that car on my name and there was no issue at all By the time I lost my Rc .
when I reached mall road rto staff told me that I cannot retrive copy of my Rc becoz they have issued my NOC somewhere in Punjab and when I asked for documents they strt make unnecessary excuse and how it’s possible if Car is registered on my name someone else get the NOC without my authority or any legal procedure.
I have informed in police station too but nothing has been come out it’s been 3 yr nw I’m waiting for my Rc .All my documents are in attachments
My car number were DLICM 4135