Has anyone been scammed by callers pretending to be a Policeman selling advertising space in bogus magazines?

I have had several calls of this naure to my business number and the implication is that the caller is a Police Officer trying to sell you/your business advertising space in crime prevention brochures and magazines that don't actually exist. The thing is, you are led to believe you are doing a good turn by supporting the Police Force when, in actual fact, the money is simply pocketed by these people.