It took five minutes for the bartender to acknowle...

It took five minutes for the bartender to acknowledge me and it wasn't busy. It was a Wednesday night, around midnight.
I asked him to close out the tab at the first round(I was just waiting for the train and grabbed a beer) but he didn't.
Then he disappeared for another five minutes or so. I think to get someone's order, which I understand.
I gave cues to the other bartender, who then proceeded to chat casually with other customers.
I hope this was a one off, but I expected more professionalism and urgency from such an establishment.
I didn't miss my train, but I worried that I might.