Bussan Auto Finance India [BAF] — Seized my bike on road and did harassment

I was on the way to work, but all of sudden two persons came infront of my bike and stopped me. They told me that due to pending due payments we are seizing your bike. I request them to let me talk to their manager and ask to settle this matter. While talking to the manager, one person run away with my bike while other person was dramatically started his bike and escaped without any conversation. The behaviour was so rude and I was standing alone on road. There must be some standard procedure to settle the amount but this is not the way to do stealing like act on road.