Don't give up !
If you've been at the facility for years , they have plenty of records ,as to who and how you worked with X person or therapist . You have a right to read those records , make an appointment to read your records, make notes of who it was .
Then make an appointment with the medical director ,head Proc, T supervisor .
Don't focus on bad experiences or bad mouth the people that didn't work .
Focus the conversation on who or what did work ,and ask for reassignment to 1st available with someone who is more like what has been successfull, they may not have an immediate opening ,however you should not have to go to the bottom of the list and wait for another random T opening.

Make sure to use there own talking points against them .

1.Theres a shortage of mental health people
2. They aren't paid well
3. They have different styles

And your talking points

1. Earlier intervention has better outcomes
2. You have a long history ,they know or can look up
3. Tell them who you did work well with

Don't be a passive consumer , my mom taught me something that served me well in life " Be proactive not reactive" so go into that meeting as your best advocate , have what you want to say either written down or in notes that can keep you on track and convey what you need them to understand .
"Squeaky wheels get the grease", start squeaking!