hi i have i a toyata land cruiser which exported to pakistan 2 years ago the car is a 1999 3liter petrol. i previously paid token dtuy of about 4000rs but when i tried to renew duty i was told i have to pay 3 lak rs because of a new increase. custum duty alrady paid on my car and it is over 5years old and imported over 2years ago. is this correcr charge?