· Complaints may be filed by completing a DSHS complaint form and submitting to the EMS Compliance Unit by: Email: EMS_Complaint@dshs.texas.gov. Fax: (512) 821-4510. Mail: Mail Code-1876, Texas Department of State Health Services, Attn: EMS Complaints, PO Box 149347, Austin, Texas 78714-9347. The DSHS Complaint Form is available to either download ( PDF) or requesting a copy to be sent by calling 512-834 ….