Cars Q&A

I brought Hyundai EON in 2014. I had HDFC car loan which was closed about 2.5 yrs back but I forgot to submit NOC to RTO. And now I am trying to sell the car and came to know today that my car was transfered to someone else on the day of registration. I do have RC smartcard and all other documents which shows I am the real owner. But now RTO records are showing car belongs to someone else and I am previous owner. I never sold the car and I have been using it ever since I brought it. What should I do now to remove the current owner info from RTO records and make me as current and first owner. Any help is greatly appreciated.