Getting in on this late, but my experiences have been varied. As a PP said, CMs are to ask at least 3x if they need assistence. And not in a "do you need help, do you need help, do you need help?" way, but in a more cautious and helpful way, and to explain the options.
Other experience: I have a seizure disorder, and had a seizure at MK many years ago. Disney has a little tiny stretcher and mini ambulance there, and they quickly whisked me backstage for help. They do have emts on staff. The mini-ambulance is kinda cute, although I would prefer to never be on it again!
Second and last experience: Last year we stayed at Caribbean Beach, and I was wearing my pretty high heeled cork sandals. Me being my typical cliche clumsy self managed to find the only major pothole/crack on the sidewalk. My cork sandals are pretty but not stable and I fell down and nearly twisted my ankle. Fortunately my mom is a nurse/midwife and managed to wrap my ankle up. I could still walk pretty well (twisted ankle ain't going to stop me at Disney!), and told the manager that they should really pave that thing up. She took down all my info, asked if I need to see any of their urgent care people, how was I doing, where was I when it happened, etc. She was very helpful, and gave me her card, as well as another card (some legal dept or something) in case things got bad. I refused care b/c really, with a nurse mom, and the fact that I limp/walked down to Port Royal, I thought I was OK. Annoyed, but OK. And I was eventually. No issues.
So, Disney did care of me, and I'm sorry that they didn't do that for you. But the gate should have been closed, really. That was a misstep on their part.