Annie, If you wouldn't mind, could you put "off topic" on these non-MG posts?
Do you have a tape recorder? Does your phone have a "speaker" function? It might be a good idea to start recording these conversations. These workers are held accountable by the state. Threatening someone who is disabled is tantamount to abuse and is punishable by law. Do you have a contract with them that allows them to choose the day they care for you . . . or else?
You will have to gather evidence and submit it to the appropriate authorities in your state, which will probably be the Attorney General's office.
There is another reason to report abuse. There are other people out there who are probably getting the same treatment. So it's a good idea to let the Attorney General know that the DHS is turning a blind eye to these problems.
Other than that, I don't have any advice.
Annie