Here's what jumps out at me.
You say you asked to join one of their public events.
Well, if it's public, it's open to everyone, right?
And that includes you.
So you have every right to show up,
regardless of if there's someone there you don't get along with.
On the other hand, you were told you were not wanted there.
Which hints that you could possibly be told to leave if you do show up?
Or if not, what's the worst that could happen?
And with all the above, do you even want to attend such an event at all?
Anyways, it seems to me you've been shown that
people in the club will not stand up for you.
You therefore can't count on them.
Simply points to consider.