Rather than coming back and saying, "I had no idea that your wife felt she was snubbed, and felt that it happened because she was a woman - I'll make sure to confer with my staff to mitigate that sort of thing from happening again." Or you could have said something to the effect of, "I'd like to offer our apologies - we had no idea regarding the turnout we were going to have, and our staff was overwhelmed at times - please give us another chance to show you that we really are a business who cares about our customers." You could have even gotten together with them in a Private Message and offered them another round of free range time as a means to show them that you do care about them as people and as customers.
You didn't do any of those things. Instead, you came on here and berated the customer for what was clearly an unsatisfactory experience on their end due to deficiencies on yours. It doesn't matter if those deficiencies were intentional or not - from the perspective of the customer, they happened, and it seems to me that FN509Fan was pretty reasonable in their expectations. You had a golden opportunity to come on here and make it right, and you could have handled it any number of ways that would have worked out in everyone's favor - not only with FN509Fan, but with the rest of us reading this thread, some of whom are close enough to be patrons in your establishment. Instead, you criticized and berated the customer and attempted to put it on them for their lack of understanding and appreciation for the event you CHOSE to host.
Again, it's all about mindset and attitude, and how you chose to approach a customer. We live in an area where we have choices about where and how to spend our money, and customer service and support is paramount. People in the firearms community are not generally very tolerant of what they perceive to be poor customer service.
There are entire lengthy threads dedicated to the customer service of the ranges and shops that are focused on gun owners and hunters - Select Fire, Continental Arms, Cindy's Hot Shots, On Target (now also owned by Cindy's) and Worth a Shot are a few that immediately come to mind. We care about it enough that we create threads on it and discuss it. With that in mind, I just think you approach should have been conciliatory rather than accusatory.
One other thing Gilbert missed the chance to address, and I am not meaning it as a pile on Gilbert and the Range post, but where FN509fan experienced a potentially life taking incident at the hands of one participant, THIS needed to be acknowledged and commented on in order to reassure FN509fan, me, trickg, any and all MDS members and ALL other shooters of the community that might frequent Gilbert's that all proper measures would be put forth to train and provide RO's so that there will be a 0% occurrence of Death/accidental shooting by poor firearms control.