Low Income Mental Health Facilities.

I've been here in Houston since April of this year, but I'm having a hard time finding mental health care for my anxiety and PTSD. Before moving to Houston I lived in Victoria, TX and was able to receive free/low cost mental health services through Gulf Bend. Right now I'm relying on one of those online doctors and that's costing me almost $100 a month. There's so much red tape to go through just to get my Prozac from a clinic around here so I'm relying on these services as I don't want to have to go to an ER to get my meds as I was told by someone at a clinic downtown. I've called a few places like Harris Health and they're asking for more documents, etc. I sent them my information but they need more. Thank you for any recommendations.