I'd be surprised if they're worn out so soon ... those are metal cleats, right? I get typically 3,000 miles out of a plastic Look Keo on my right foot (the one I unclip and put down at stops) and 5-6,000 miles on the left.

And if your LBS is looking to the manufacturer I'm figuring they've looked at all the obvious solutions like readjusting tension for wear.

Hope you get it sorted soon.