Hertz OR Tambo Poor Customer Service, Rude personnel, and unprofessionalism

Hertz OR Tambo branch, billed me incorrectly for a car that I have been renting with them for over a month and a half. Their representatives called me, harrassed me on the phone, to an extent that they made me feel like a **** and a *****, and this was admitted by one of their representatives named Mandy. After showing them their error in the billing, after they sent me my invoices, nobody contacted me or e-mailed me to explain and apologise for the inconvenience and continuous harrassment.

I called and spoke to a lady called Mandy, who was rude, unprofessional, with no courtesy at all. She tried to explain their system operations, which was not my business and had no interest into. When I pointed this out to her that her system operations and glitched are of no interest to me, instead of apologising she became aggressive and dismissive again, and told me to continue using the car or return it if I may so wish.

All I was interested in was an apology and assurance that this wont happen again. I have spent R27 000-00 on this company in less than two month, and the treatment I got was that of a *****.