I think we all have issues with the (gaps in) training or knowledge of customer facing staff in the Lounges. Some of them are AAngels, whilst some are drAAgons. This is across all the oneworld alliance airlines – the same issues happpen in Australia for AA or BA cardholders from time to time (or vice versa).
Thus the reason I carry copies of the rules from the relevant websites. AAngels will read it and agree if we are right and allow access; whereas drAAgons refuse to hear our facts. That’s when I would escalate to the Lounge Manager, if I know I am correct. I may not win a friend with the drAAgon, but those that can’t admit their mistakes I have so little time for their attitude or empire building.