Ap Transport — buyer has not transferring ownership of bike

Address:

Vizianagaram, Andhra Pradesh, 535004

My name teja . I have sold my bike 1 year ago but buyer not transfering the ownership of the bike.i have told so many times but not reaction that person. That person sold my bike in another person and that person also selled to another one but not trasffered the ownership registration.my bike changed one person to up 4 persons changes my bike .but not to registerd