Cholamandalam Finance — Harrassment

My vehicle went under accident now I am unable to claim the insurance due to driver license issue I requested chola finance to increase duration but they didn't help me instead they harassed me by saying that they will not give me NOC and also pick my other vehicles and take in their custody now if they are not giving me any kind of solution how will I pay off the dues just help me out, they are not even responding me politely and misbehaving with me.