Just Me is incredibly helpful to everyone who posts a question Just Me can answer. Perhaps you may have misinterpreted Just Me's tone because, since we're just writing in sentences on the internet, you cannot see Just Me's face or hear Just Me's voice so you could see Just Me was being sincere.
I can only say that, if I were in your situation, and was frustrated, angry, confused, irritated, and vehemently upset at virtually all individuals whom I interacted with, I would immediately seek out someone to advocate for me to get my points across, who could communicate in such a way that resolutions can be had. It could be a friend, family member, social worker, social security advocate, non-profit volunteer for the disabled, etc. But you might find that these people will succeed where you have run into problems in the past.