cmht

hi wondered if anyone here was under a cmht.  im having real issues with communication and getting them to understand what im saying.  it so frustrating like im talking a completely different language.  im guessing it my autism but im not sure maybe its them just not hearing me.  they said if i see a psychologist they might be able to understand what im saying better but its them that are not hearing me and understanding.  me seeing a psychologist surely wont make them hear what im explaining to them any better.  im mute so can only write which doesnt help but they ask me a a question i write my answer down and when they reply they have totally misunderstood me.  what would you suggest.