The caller was selling advertising for the "Edmonton Police News", which is a really crappy little publication that misrepresents itself as having something to do with supporting the Edmonton Police Service.  

Ask yourself this question:  Why would highly paid civil servants need funding from such a crappy little magazine?

Answer:  They don't.  

The police (and firefighters and paramedics) are supported through your tax dollars.  The only beneficiary from this magazine is the owner of Cedar Publishing.  

While not technically a scam, the magazine is of very poor quality, the editorial content is generic and recycled from previous publications.  

Just hang up when these people call and save yourself some money and headaches.