Carflexi - hidden costs not revealed

I booked a car thru their website and it is mentioned that the total cost is NAD1058.60. I completed my credit card details and they requested payment of R299.70 I was expecting this to be part of the hire price. Then the voucher issued by carflexi says I must still pay the car hire desk the NAD1058.60. They misrepresented themselves as nowhere does it mention a service fee. Are there ****** in this game?