poor service

This morning at 06:00, i went to your garage at Diepkloof garage, your garage didn't have petrol, however your staff just looked at me without communication, till I walked out of my car to enquire, one guy was looking at me through the window and didn't bother to come out and tell me the is no petrol. please train your stuff to be customer friendly and communicate better. i will never fill up my car at Caltex