Google local results shows my site for another agent!!

I was checking the serps today and found that the top 7 or 8 results for the local results (items listed A-J) has one of my niche sites with my keyword listed. The only problem is that it is listing a phone number for ANOTHER AGENT!!

Sooo, what I am trying to figure out is how that info is generated. Did she (the other agent) erroneously do this, maliciously do this, or is it a flub up on Google's side???