I had the exact same problem a few years ago. There was fraud on my card and it was cancelled. Some reason it also revoked the payment I had already made in eve and it banned me for a week. I got help fairly quickly. Since I could not log in to add game time, they instructed me to buy plex on an alt, and provide them the name of the toon and exact location of the plex. They took it out and now I’m back in action. Hope this helps o7
(Edit: I’d like to point out that while it took them only a week to bring me back, more often than not, it takes a while for a response. One time it took a month for them to get back to me on a separate issue. My advice is to regularly check your email for responses, but do not antagonize them to work faster, they are very busy.)