Thank you for contacting Acme.  How may I help you today?
Hello, I am trying to make a purchase and my credit card keeps getting rejected
Okay, let me see if I can help you with that Sometimes the simplest solution is the right one.  Have you tried re-entering the card number, possibly even copying and pasting it from your bank website to make sure it's perfect?
I have tried that
Okay, in that case, it may be a simple website issue that's causing the problem.  Can you try logging out and then logging right back in. We'll still stay connected, but the reset might help the site recognize your card
Yes let me try that Great, that seemed to be the trick Thank you
Good to hear.  May I help with anything else while we're here?
That is all
Perfect.  Have a great day.