Go to Police as soon as possible. tell them when you lost it.
it happened to me before. normally SB kiwis will put your plate onto their cars. then go to fill up petrol and run away. petrol station will only catch the plate number which belongs to you. It means petrol station will charge the ammount to you. go to police now la.
I am in office so i can not type chinese.
but good luck anyway. ;biggrin;