Very unhappy, agitated Caltex customer

On the 23rd December we had an unfortunate incident when we were filling up at Caltex in Alice, Eastern Cape. We were filling up with petrol, we drove approximately 60km and our car lost all power and completely stopped. We had the car towed, and when we went to enquire at Caltex they told us all their tanks had been mistakenly refilled with diesel. They acknowledged that it was their mistake and they would pay for all repairs. We had the car towed again to a repair center. Since then, we have been fighting with Caltex to pay for all costs incured but not a single cent has been paid yet. We now are incurring extra costs and are highly inconvenienced. I had to look for alternative transport for my kids, which costs me R1000 a month. My husband and I are also spending about R60 a day each for transportation to and from work. Grocery shopping is a huge hussle, we live in an area where we dont even have bolt or uber. Caltex SA please attend to our issue with urgency, we are suffering because we went to support your business.