Vehicle Registration not transferred by the buyer of my two-wheeler

I moved to Dubai in the 1st week of January 2023 as I got a job. In Dec 2022, I sold my Honda Activa scooter to a person in Mumbai and he took my signatures on the transfer paper to submit to RTO. He paid me the amount and said I won't be required to come to RTO since his agent will do all the admin work to get the vehicle ownership transfer. Since I had to leave India and migrate to Dubai, I could not wait to personally ensure that the ownership transfer is taken care legitimately. Later in 2023, I started getting SMS from RTO about some challans in my name. I immediately Whatsapped the buyer and asked him to pay the dues and complete the transfer work. In 2024, continued getting SMS from RTO and hence I went to Mumbai to talk to him, to which the buyer said that he misplaced the RC book and will need time to find it. Later in December 2024, I again went to Mumbai and he told me to sign the papers again since he claimed to have found the RC book. Now in 2025, I can see on the Parivahan website that the vehicle is still registered in my name and there are pending chalan payments. How do I handle this situation since I am in Dubai and cannot personally meet him every day or register any complaint against him to complete the process legitimately?