Found this in my call logs :
Name                           Number              When                    Length
ENERGY EXPERTS     720-639-8167     Wed, 11-11-15     0:24        (called twice that day)
ENERGY EXPERTS     720-639-8167     Thu, 11-12-15      0:26
ENERGY EXPERTS     720-639-8167     Fri, 11-13-15        0:25
None of these callers left a message.
I don't know anyone in Colorado, and there are plenty of "Energy Experts" in Texas to contact if I need anything.