Non refundable payment

On the 03/01/2020 at 15h54 I made a booking at HERTZ/FIREFLY at George SA.

Rental period is 03-12 January 2020 and the online booking stated that "price for rental period " was R1985. I immediately made the payment to reserve my booking.

Upon arrival at the desk in George I was notified by desk that I was dealing with a third party.

For me to receive my rental I have to pay an deposit of R13 000. On the spot I told them that this was 'n crazy price and that I would like to cancel my booking. (Booking was made at 15h54 and this was round about 16h40).

The lady of carflexi told myself and the sale person at hertz that my payment of R1985 is non refundable...

I have not made use of any of the services provide by carflexi.

Please can someone advice me on what to do or provide me with a superiors contact information. I would like to resolve this as this is not right and it is a lot of money...