However, there may be some exceptions to this rule. For example, if you were arrested and incarcerated before you had a chance to return the car, you may be able to get a refund for the unused portion of the rental period. To do this, you will need to contact the car rental company and request a refund.
You may also be able to get a refund if the car rental company was negligent in some way. For example, if the car was not properly maintained and caused you to have an accident, you may be able to sue the car rental company for damages.
If you are in prison and you are being charged for a car rental that you cannot use, you should contact an attorney to discuss your rights.