Fucking bouncers. You were probably refused because your presence in their establishment would raise the tone of the place.
I was refused entry by bouncers 3 times, I'm sure once it was because I was carrying an umbrella.
I was on a jury once and the case was of a bouncer beating the shit out of some sap. I was looking forward to sending the no-neck fucktard down, but the thick guards screwed up the case.