Terrible service with Horrible Attitude!!! Worst!

At about 18h00, I went to the engen garage in Randfontein where I normally fill my car. Asked the attendent to fill my tank and chk oil and water. He alerted me that I need oil and told him to put on oil. As I was going to pay with a bank card, he told me to go inside & pay there as he could not process oil on the stand alone machine. Whilst I was busy with the transaction inside , he came & handed my keys. I then drove off. About an hour latet after i was parked in Toekomsrus, I started the car & it made some scritching noise. Upon insepction, I found that, the oil cap was missing & oil splashed all over my engen. I immidiately drove back to the garage with a plastic bag covering where the oil cap is supposed to be. Upon my arrival, I requested to see a Supervisor or Manager & Nthabiseng identified herself to be incharge. After showing her my engine, she immidiately called someone who later identified himself as Suhail the owner of the branch. He was very rude to me and actually had the odesity to say It was my fault as it is the client's responsibility to check if everything is fine before driving off. He was arrogant & unappologetic about the whole thing & said its my fault.