Hello, how may I help you today?
Hi, I'm trying to make a purchase however my credit card has been rejected several times.
I am so sorry about that, I will be happy to assist you.  Who am I speaking with today?
My name is David Williams
Thanks David.  First, can I instruct you to enter your credit card info and try again to make your purchase?
Yes, one moment The information is correct but I'm still receiving a rejection.
Okay.  Next, can you log out / log in back into your account and make the purchase again?
Ok, one moment Hmm, it seems like that has done the trick.
Great, I'm so happy we were successful in getting this resolved. May I help you with anything else today?
I think that's all.  Thanks for the help!
Great, have a wonderful rest of your day.