I have park my car in the parking area in Kayan station (west). As per my knowledge, the parking charges for car are 10 Rs. for less than 1 hour. But the contractor of parking area demands for 20Rs, which is unauthorised. After demanding the receipt for Rs. 20, he always changes the amount on the receipt by the pen and also threat us that dont bring your car here next time .Anyone can tell me, what to do of this unauthorised parking charges ...?