Terrible customer service_Car Service and put no engine oil after draining the old oil

I took my car in for service at american suv around mid December. I drove the car back home, 2 days after the low oil pressure error message appeared on the cluster, I call Johan from american suv, and also sent them emails. They told me to tow the car back to their workshop, I asked if they will cover towing costs, and obviously the answer was no. I was then told that they will soon be closing for December holidays.

Me and my family spent the holidays inconvenienced, stranded without a car, had to make plans to be able to get around, after paying R31 000 to american suv for the maintenance of my car. January I approached eCar workshop, they sent a technician to do fault finding, it was established that the car had no oil. My car was towed to the eCar workshop, they ran some tests including checking if there are any oil leaks, no leaks were found and nothing else was found to be wrong, except for the fact that there was no engine oil. I brought this to the attention of american suv management, still nothing was done, I had to pay R 2100 for the oil, these people showed no interest in my problem. I almost lost an engine which would have costed me about R150 000, because of a silly unacceptable mistake from who claims to be one of the best workshops. My advise to everyone, take your car to these people at your own risk, they commit ameture mistakes and take no accountability for it.