The way how you "tell them" has a great impact on how you and your messages are received. For example, if you had from the start - or while replying the first time to Debra - stated something along the lines of "This was to warn you guys what happened to me, so you'll know to watch out", in a polite tone, I believe all would have been good and people would have understood your point.
Now though, you resorted to rudeness immediately and seemed to expect others to be mind-readers, who understand the stranger's intentions immediately, even if the logic indeed points towards another direction (your message started with an address towards specific Airbnb CS rep, and ended with a typical farewell phrase, both of which imply that it is a message addressed to that particular CS rep, instead of being a general topic starter).
And wow, seriously? Implying that someone needs medical help because you do not agree with them? How very classy 🙄