I can tell you a very RAW (but legal) I mean really very RAW Legit way to bring the cheater dude down to knees in shortest possible time you can imagine. He will not only give you receipt he will pay all expense for transfer of engine number without you moving your bum away from comfort of home. He will pay to his very own 'TANKRA BHARAM BAZ' people as well to get out of his own mess which he ignored for awhile
For that you need to do some effort and stand up and get going to people & adopt the way i guide you to. -
however for that there has to be a poll by admin & mods for this problem solving.
because the guy right now is in EGO Drive. after your move it will be in HYPER DRIVE of EGO & will go to any extent to be in a WIN WIN situation no matter how much he lose.