Wrong fuel, then failed to get me home safely

Wrong fuel was poured into my car. It jerked on my way then I called them after realising their mistake. Wanted to call my insurance but they said they will assist. My car still being under warranty the workshop refused to do anything on it and contacted my dealership which said it should be delivered to them. We were then stranded and requested the garage made means to get us to our destination and back home. The manager by the name of Deez failed us completely til we find ourselves a lift home. They offered to hire me a car provided I had a credit card or R5500. 00 in my cheque account. Since I had no such I was left to find my way for their fault. I am very angry. What would have happened if I was alone being a female in a place with no friends and family. Luckily I was driving with my brother inlaws who were able to negotiate for lifts back home. How could I be so abused for garages fault?