I received two calls today from this number which is based in Austin, Texas. Despite me answering each call, the calls were not answered by a person or machine on the other end. Each call eventually hung up after timing out. I attempted to call the number back, but the organization was never identified and there was no choice available to speak with a live person. There was an option given to enter #5 and be removed from the "call list" within 24 hours, so I did select this choice in the hopes it would make these calls cease. As a result of these two illegal phone calls, I did file formal complaints at both the State and Federal level. I have included links below so that you can do the same.
State of Texas (Public Utility Commission): http://puc.texas.gov/consumer/complaint/Complaint.aspx
Federal (Federal Trade Commission): https://www.ftccomplaintassistant.gov/#crnt&panel1-4