Ask the attendant who runs your credit card when you return the car to see a specific, detailed invoice. The easiest way to prevent an overcharge is to verify charges before you pay for them. If the amount seems too high or you do not understand a particular surcharge, ask to speak with a manager who can better explain your invoice to you.
Call the rental car company immediately if you notice the amount it charged to your credit card differs from the amount on your printed invoice or receipt. If you did not authorize the amount verbally or in writing, it could have been an error. On the other hand, car rental companies reserve the right to bill you for any damage to the car, so make sure this is not the cause of the discrepancy before proceeding. If you still believe you did not authorize the charges, speak with the center manager and ask him to issue you a partial refund.
Contact your bank or credit card provider if the rental car company cannot resolve the dispute to your liking. Provide the representative with as many details about the transaction as possible, including the names of car rental associates with whom you spoke, the specific time at which you picked up and dropped off the car and copies of any invoices or receipts you have received. Your financial institution's dispute department will conduct an objective investigation into your rental transaction to determine whether or not the charges were legitimate.
