Indian Oil Corporation [IOC] — cng petrol pump

I was in queue to fill cng in my car at a petrol pimp in goregoan east near smashan bhumi on 17/08/2019, waiting for about an hour, a car came from behind and went direct to the filling station and filled the gas and the person named dubey told me that he was in queue. How come he was in queue as i was in queue for about an hour. I went to the manager he also said the same thing. When i told him that i want to complain, he said why are you complaining sir. We will sort it out. I asked his name, but he didnot tell his name. This is the second time this has happened. The payment by card was also not available and it was not declared any where.