Remember the childhood game of whispering a phrase to someone and asking them to pass it on? By the time it reached the fourth or fifth person, the meaning of the original phrase was lost! Then, it amused us; in customer care, it can be costly.
The very best people skills that candidates will ever employ are on display in the interview situation as they try to win a position with your company. If they don’t capture you there, do you really want them in front of your valuable customers?