Vehicle not released

i booked and fully paid an Avis rental for 7 days from CT airport. We added an additional driver through the call center in Johannesburg. I was assured that the additional driver can pick up the rental and had to pay an additional R300. Not so. Vehicle could not be released, i had to drive to an Avis office to pay a fuel levy of R1800 with my credit card - please avis - show me how you fit R1800 of fuel into a car? before the rental could be released to the additional driver. <br> The additional driver in CT was told they would be upgraded after the long wait. This didn't happen. <br> <br> What would be beneficial is clear communication from Avis. one story between your offices and and improvement in customer care, will help your brand. <br> I hold an Avis preferred card, and the treatment i have received today is NOT preferred. I prefer to go elsewhere....<br> <br>