Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
I am sorry to hear about your problem with the credit card entry and the site.
The message about the site not having been used for a while, probably indicated that you had to log in to your account again. Or the window, where you were logged in, may have been closed.
I regret that I cannot, myself, offer Live Phone Call service at this time.
Please tell me what site you are having the problem with.
As for credit card information entry... it may help to enter your information IN ALL-CAPS, LIKE THIS, because that is often how it is stored in the computer at your bank. Also be sure to enter everything just as seen on your credit card, and/or just as seen on your bank statement for the credit card's account... even little discrepancies may cause the card information to be refused by the website entry form.