Welcome to AcmeBrands. How may I help?
I want to purchase something but my credit card keeps getting rejected
OK. I can help. It says your card is invalid on the website?

Please try entering the information again. Let me know if it worked.
Okay I tried it again and it still didn't work
OK

Please log out and log back in. Let me know if that works.
I tired that and it still didn't work
Ok. Please double check the expiration date. Let me know.
Yeah I think that may be the problem!
Great! Anything else I can help with?