Thank you for contacting Acme.  How may I help you today?
I have been trying to purchase an item but my card keeps getting rejected.
Oh, I'm sorry to hear that.  Let's see if we can get to the bottom of this May I ask, right off the bat, that you check the expiration date on your card. If you've gotten a new card in the mail recently, our site might still be holding onto an older version of it, and that could cause an error
that appears to be correct
Okay, and may I ask that you double-check the card number as you enter it. It can be very easy to get a single digit wrong, it happens to me all the time
oh geez one of the 7s was worn down a bit and did look like a 1
Ah, I'm glad to hear it.  Is your card being accepted now with the lucky 7?
yes it is everything is good now
Excellent, if there's nothing else that I can help you with, I hope you have a great day.