The sad part is that SE won't even acknowledge that there IS a problem, as evidenced by the very first post on this thread. They blame everything on the users financial institution, when in reality it is either their site itself, or global connect that is rejecting the payment. Then there are the stacking 24 hour wait periods with no indication of how much longer you need to wait.

This is such a simple thing to fix, and is directly affecting their income. It boggles my mind that they haven't addressed this yet.