Dollar thrifty car rental

I rented a car from them over a week ago. My invoice said a Hyundai i20 grande/ Toyota Aygo I received a Dutsan Go. Not the problem. A holding deposit of R2000 was kept, I filled the tank before returning it. Car was in great condition as I only needed to be in CT. This morning a reversal of a lowsy 300 was returned. So you telling me I paid 5k for a car that I could have rather left without fuel etc that was so tiny I couldn't fit another ant? Disgusted how they openly take from people without shame. That why stick to Avis and all the places we are used to because they are not as schemey as this place.