Twice in the last month I had to return an item for exchange, and waited at least 10 minutes to be taken care of. This happened both times while I brought something back.
I finally got to the counter while being helped what I think was a supervisor came up and pulled both employees from the counter leaving myself and another shopper at the counter to discuss who's turn it was to take a lunch and or break, this took sometime and they acted like there was no one at the counter.
That's not customer service which is the department I was in. I'm very disappointed in Wal-Mart.