What resources does Hertz customer service provide to assist customers with reservation changes, billing issues, or vehicle availability concerns?

A discrepancy in my bill after renting a Hertz car left me confused. I contacted Hertz customer service https://hertz.pissedconsumer.com/customer-service.html and they quickly clarified the situation and provided a partial refund. Thanks to their professional and efficient approach, my trip ended on a positive note.