Shiny happy people

I'm sure those of you who do or have worked in retail have your list of peeves concerning the thing that makes it possible to be employed: the customers. I'd like to just go over a few of the ones that are really starting to get to me in my old age.
We installed an automated phone system which allows the customer to key in their prescription number for a refill. It goes straight to our computer system to be filled. It was designed to free up the time on the phone taking these requests. Yesterday i must have taken 5 different refill orders from customers who just pushed the # to speak to an employee.
A shopper comes up to the counter with a pile of purchases. They stand there and watch me ring in each item. Meanwhile, customers are lining up behind them. They wait until i tell them the total to pull out their checkbook and start filling out the check.
The unattended children who wander the aisles, running their fingers along the price tags, sliding them until they rest under the wrong items. Then you may get the occasional customer who insists they should get the item for $1.99 when it is really $13.99, but that's what the tag says. The customer is always right, right?