That's not uncommon unfortunately and I would actually be interested in the name of the club if you can remember. Because a lot of discriminatory clubs have closed down at least in Cape Town and Western Cape area. There are also other examples like the Bang Bar (what a telling name) that catered mostly to black men from the townships where prices were reasonable.
I teach IT classes to young adults in two townships and they too report that they're often left out of the night clubs in the city. They also freely admit that they mostly go because of the white girls there. ******* can be brutally honest. It's tricky for the club owners because more than anything they want paying customers.
I had a discussion with them and they were brainstorming and one guy brought up the idea that the club could simply mandate women to pay for the drinks. That way black guys wouldn't be left out for economic reasons. Probably a bit naive but I believe better than doing nothing.
Affirmative action is a more extreme example----but hey this is the extreme forum.
One guy basically argued that what works in education could also work in night clubs. We then did the math: Now of course, the Cape Town clubs don't see many black girls so only the black guy quota could be fulfilled and you could fulfill the gender quote. So you'd end up with half of the people in the club white women and among the men, the vast majority (roughly 90%) would be black or coloured. The discussion ended there but the guys in my course of course agreed that that's the ideal outcome.