First Car Hire rips off its customers

After having a vehicle that was jerking due to some technical malfunction and having the vehicle replaced by First (much trouble as they kept on sending recovery from Durban when I rented and remained in Cape Town) First is unable to recognize that whilst I gave them a full vehicle back they drove off without giving me the same. They further insist on charging the customer for the mileage they had to drive to bring me the vehicle from the airport. We are not even talking much money and it wasn't about the money in the first place - in fact they can keep the money. It is about business ethic and honesty which they don't seem to possess. Instead they needlessly waste my time communicating to their customer we-don't-care center when this was adequately discussed when handing the vehicle back at the branch but conveniently ignored. With this in mind I (in my capacity as director) have instructed our company to no longer rent vehicles from First or affiliated services such as National Alamo etc.