I too had similar experiances. The final straw was a bubba that walked out toward his target when I was shooting. When I screamed at him I was still shooting - tell me he is going to get his targets!!!!!.....his answer? "..well quit shooting...."
Joined a private club to the tune of $600 initiatation and $300 dues a year. Pricey, but worth it. They are VERY strict on following rules. You do get the oppurtunity to apeal to the board for suspensions or getting kicked out. Usually that doesn't work, and your name and what you did is told to the membership as a lesson. There are few problems.
Still, we do have a few trouble makers. Thatnkfully the rules tend to keep them in check. Destruction and rudeness of what you where subjected to will get you thrown out on the spot. The appeal will be very short....and not in your favor.
Sorry to hear this. You would have been an interesting person to talk to and would offer all kinds of nifty tricks and tips, and likely even let them shoot what you brought to the range. So, instead of a civil interaction - they chose to intentionally and flagrantly act in a truculant manner. Gives not only anit-gunners fodder, it just plain adds aggrovation to life. Some people have such low esteem and character, they have to prop themselves up by acting out in this manner. Gives trailer trash a bad name!
Best of luck,
Chris