[hanamizu]

Exactly! What’s the last time one ever gets undercharges on credit card bills?

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Excellent point. It seems there is technology available to process millions of transactions a day with virtually no mistakes. Not just credit cards. I can buy and sell stock and my trade shows up virtually instantly. I’ve never had “Oh we just found twelve shares in a drawer”. I’ve never been double or triple charged for the same purchase.

[entropy12]

In 50 years of using credit card, I was charged double on gas purchase just once!

But both my card and my wife’s credit card had identical bogus charges about 4 years back. Both from the same gas station in NY city. Neither one of us had lost the cards and we never use our cards in the same stores. So we figured it was inside job at the credit card company. They of course canceled all bogus charges.