Had an airline do this to me. Charged me repeatedly for the same flight. Didn’t know until I got to foreign destination with bank account overdrawn. Had a new

Had an airline do this to me. Charged me repeatedly for the same flight. Didn’t know until I got to foreign destination with bank account overdrawn. Had a newborn baby with me. It didn’t go well. Every time since I have at least 2 bank accounts, 3 credit cards, and lots of cash ready.