Welcome to AcmeBrands. How may I help?
Albert Sanders here. My credit card is getting rejected again and again. Super frustrating!
OK. Let me see if I can help with that. What does it say when you use your credit card?
It says it's invalid And it's not expired, that's the first thing I checked.
OK. I have a few troubleshooting steps for that.

Please try entering the card information again. Let me know if that works.
Alright, give me a sec
ok
Nah, didn't work. Just gives me the same bogus "invalid" message.
ok

Please next try to log out and then log back in. Let me know if that solves it.
Woah! I don't know WHY that worked, but it worked. Thanks!
Great! Anything else I can help you with?
I'm all good, thanks!
Have a great day!