COLD CALLS AT 3 IN THE MORNING

I work for a company that requires an after hours EMERGENCY service for our clients. That means our clients contact our EMERGENCY number in the event of an EMERGENCY. I get a call at 3:10 in the morning which I had missed as I was ASLEEP, and I called the number back a minute later thinking it may be a client who needed URGENT assistance. You can imagine my FRUSTRATION when I call the number and the lady on the other line does not want to tell me which company she's from. But she wants me to tell her MY name and MY address and where I work. I then ask again which company she works for and she says Blue Security. She proceeds to ask me if I have Blue Security. I asked her why is she calling me and she gives me attitude and says that I was the one that called her. NOW WHY WOULD I CALL A SECURITY COMPANY THAT I HAVE NEVER USED, AT 3 IN THE MORNING. FIRSTLY I WOULD LIKE TO KNOW HOW DOES BLUE SECURITY THINK ITS OKAY TO COLD CALL PEOPLE AT 3 IN THE MORNING. WE NORMAL PEOPLE NEED OUR SLEEP AS WE HAVE TO GET READY FOR WORK IN THE MORNING WHICH IS AT A DECENT HOUR AND NOT AT 3 IN THE MORNING. SECONDLY WHERE DID YOU GET MY NUMBER FROM.