Oil Change

I work just feet away, so I took my car there for an oil change. As soon as I walked back in my office, my coworker said, "If they aren't busy, I'll take mine there to get it washed". He was back 5 minutes later and told me my car was done. So, I walked back over there and sure enough, it was parked in back. When I went to pay, I asked the attendant who serviced it if it had been low on oil as I had a slow leak. He said, "I have no idea, we only drained it and refilled it". So, they didn't even check the oil at all before changing it. And, considering the fact that the car was there a total of less than 10 minutes, I can guarantee they did not do any kind of inspection AT ALL. They didn't have time to check any of it. So, they charged me $46 to not do any kind of fluid checks/inspection whatsoever. I won't EVER be back.