Wow. I've had elements of that sort of attitude but it sounds like your 'team' have taken it to a whole new level. It really is a shame you can't transition to the public system but I guess it's too late now. Having to pay to be treated like shit is the ultimate insult.
I sacked a medical oncology clinic for being both superior and thoughtless. It felt really good.
If you are feeling a bit rebellious, could I suggest a bit of passive resistance? I find that can be fun. If anyone treats me like I'm stupid or makes me feel like Ii am the invisible woman, I will either bite their head of or do my Dumb Cow act.. Go full on bovine stupidity. Stand in the one spot until told to move, then ask 'Now?' Take everything that is said to you literally.
Anothere excellent ploy with the Terribly Important is to take a little notebook with you and laboriously write down everyone's name. Everyone from the receptionist upward. Every time you see them. Every time. Ask them to spell it if you want to add another layer of irritation.
It can drive them nuts and finally push snarky staff into saying or doing something reportable. Then you have them over a barrel and it's remarkable how quickly attitudes change when you switch on and start asking to see managers.
