The most recent call was today, Dec. 20 th  2012

we get calls from this number but when we answer there's no one there and a recording says "good bye"

it's a  North  Vancouver  phone number & the company is called  A D T  alarm. i called it just now to see what would happen. A recording said " the party you are trying to call is not taking calls at this time ". Figures! Gonna call information to see if there is a different phone number to call.

The caller seemed to be familiar with our old security company and when our service ended.

Me too.  I know it is scam . I'm trying to fund out where they are calling from and seems like from north Vancouver. I already contact it police and fraud line. I hope more people will do that.