Hertz Rent a Car abuse

I have rent with Hertz for 10 months. I noticed lot of movements on my credit card, so I asked for a break down. It took me 2 months to get it, and here is the email I received:

"Thank you for your email. Please excuse the delay in our response. Due to the influx of queries for the festive season, our turnaround time is 7 – 14 business days. Kindly note I have attached a detailed breakdown of all rental charges that we have banked on your cards. This however, does not include the sundry invoice charges, such as: fine handling fees and e-toll charges. The attached bank statement furnished, does not include all transactions processed. The parts highlighted in green on the breakdown provided are all the rental transactions reflecting on your bank statement. At present your total estimated charges for rental ***X (your current rental) is R9483.00 and this includes the liability amount of R3500.00 R9290.00 is the current remaining balance that was carried forward to rental ***X If no damages or extra charges are incurred during the rental you should be in credit and this amount will be refunded to you, should you not extend the rental further. Thank you for your valued business. Kind regards"

I returned the car on Jan 31st, 2018, and still none of the money above have been refunded. But worse: - Called Hertz Customer Support (including manager and supervisor) numerous time. Most of the time, nobody pick up. When someone do, Im forwarded to the reception - I sent couple of email to them, including Wayne (District Manager): no replies.

I have read numerous similar complains on this website, and sadly, it is my turn.

My experience with Hertz Car Rental was a disaster and can be summarized as follow:

1) During the rental, multiple fees are collected from the credit card. Some have nothing to do with toll fees. 2) Between contract extension (made by phone), change of tariff are not communicated. They increase unilaterally the rental without notifying. 3) At the end of the rental, they are unreachable, and the overpaid amount is still not back 20 days after the car has been returned.