And It Wasn't The Post Office

I was in a retail establishment--which one doesn't matter--and saw a sign stating "In order to serve you better, we ask for your undivided attention."

I've never seen anything like it. I suppose it's annoying when they're trying to sell you something and you're talking on your cell, but isn't the customer is always right? This place must offer awesome service that they can threaten their patrons so.