Scam company called Cedar Publishing - they have many magazines but the one that they are harassing our company for is Alberta Paramedics Magazine.  We did not agree to advertise with them.  They are using snippets of recorded conversations to "prove" that you agreed to advertise but will not provide full disclosure of the conversation.  They are possibly doctoring the recordings.  Our company is being harassed for payment of a bill for advertising, that we did not agree to. We have complained to the BBB (they have a F- rating), and the Competition Bureau (1-800-348-5358).  We have also contacted the Edmonton Police Fraud department.  We are currently drafting a letter through our lawyer to stop the harassment and are demanding full disclosure of all conversations between our companies (digital, unedited and date stamped copies of all recordings).  

I would suggest that when they call you, put on them on hold and continue with your work.  They are not worth getting too worked up about.

Other phone numbers for this company are 780-454-3444 and 780-454-3349 (there is a large thread on this site referencing the last phone number).