The call came from Security Alarm Company

Same here... from a wireless home security system.  Left a voice mail message but it prompted to push 1 to get more info and push 2 to be removed off list.  Automated message didn't leave a phone number to return the call or list the company who was calling.  Strange because it called my Magic Jack line and I NEVER give out that number.

they threatened to purchase security system and said what if there is a robbery, made it sound like they are the one who's gonna set up the robbery

Called my business line. Hung up on me and was rude when I requested to have the line removed.

Same here for everyone with me