Hi Vox, and welcome!
In Michigan, you can go to the Health Department for a referral to a treatment facility that is no cost to you. I was able to go 90 days inpatient as an indigent (poor/needy). Also as Carol stated, The Salvation Army has treatment centers around the country that are free of charge, there is a 136 bed facility in Detroit that is six month inpatient.
Don't give up, there is a way.
Cathy