long ago (and far away) I used to work for a bank. I can tell you that credits are always cleared before debits. So if 2 charges were at the same time I believe its a law that they put through the credit first and then the debit. I hope that helps!
__________________ “Petting, scratching, and cuddling a dog could be as soothing to the mind and heart as deep meditation and almost as good for the soul as prayer.” ― Dean Koontz |