Does southwest behavioral deal with people who are trying to get off heroin?

No, only mental health

I believe they could help you Tanisha. Some people don't know that addictions are a secondary issue. The primary issue is a mental health one such as PTSD, anxiety, bipolar disorder, hypomania, etc. When you help the mental health the addictions in turn are positively affected and easier to overcome. I've worked with "dual diagnosis" patients in an in-patient psychiatric hospital as well as at the state hospital. Please dont give up. Call the office. They'll help point you in the right direction.