Alarm system scam. Free home alarm for only $49.95 per month monitoring fee. That "Free Alarm" would end up costing $600 per year. If you want them to stop calling then tell them that you are a renter.
Thanks for the info, this number has called my landline but gets disconnected imediately after the first ring so I do not know why they called. Their caller ID name is that weird date ,time and other numbers, thev first indication it is not a legitimate phone call.