GC Services Company falsely represented themselves HOUSTON, Texas

This company called my mother looking for me about what I assume is a debt I owe.  If this is true, then why did Roger (ID# 153435) call her on a couple of occasions and tell her that he was calling from the DC Government.  Since when did GC Services start doing business at a government agency.  My mother is very ill in need of a kidney transplant and these calls are very upsetting to her. I won't sit her and dispute that I owe a debt, but to falsely claim to be calling from a government agency (I assume he said this as a SCARE TACTIC) is down right reprehensible.