I have rented a car in CapeTown thru Economy car Rentals. The local rental company is Thrifty Car Rental - Cape Town Airport.
I have filled the tank at the Fuel station minutes before delivery , or shall I say I have asked the attendant to fill the tank.
See attached Receipt where I filled the tank just before delivery.
It seems that it is a very nice way of collecting additional money by arranging with the attendant not to fill the tank to it's fullest, then squeeze another liter or 2 into the tank and charge a surcharge.
Keep sending me the same emails claiming it was legit.