It doesn't make any sense that you entered all of this fake information and then accidentally clicked the confirm button. I suspect that this is just some kind of spoof. You just made up the story to see what kind of responses you could get. But whatever. Here's the answer.
If by Citibank, you mean a credit card, there's next to no chance that you guessed a valid number. And if by some fluke you did, you didn't guess the expiration date. And if by some miracle you guessed that, you didn't guess the security code. Or the zip code.
Since you weren't alerted to this when you entered it, it must be entered later manually. They'll figure it right away. And since they do this manually, they aren't sophisticated enough to trace your IP (not that that's that hard). And even if they could, they wouldn't bother.
So nothing's going to happen.