This is a legit security company calling to notify me about alarms going off at a company that I no longer work for. It seems my lazy ex-boss has not taken me off the call list. Since I quit it will probably never get done. Everyone there is waiting for someone else to get things done while they sit around pretending to work. ;p
Legitimate security company called Vector Security. They mainly cover businesses, large & small. They call when an alarm is going off. If they are calling you then politely tell them they have the wrong number. They obviously will not call back.