Hi Mel.
I would ignore people who say that. No matter who they are. And remind professionals in that field that they are professionals in that field and it's entirely unethical to make such accusations and admonitions. And as for everyone else...well, it's impossible to educate absolutely everyone, and even if you could, depression is one of those things that kinda sucks your energy and organizational skills and pretty much everything else so it's kind of impossible to do much of anything.
I'm with you though. I have experienced this. Many of us with depression have experienced this. Hopefully you're having a slightly better time of it now.