<prompt> Human: TL;DR: Payments with false card information accepted by both amazon and USAA. Check your bank accounts and verify your info!So I was trying to order something from Amazon and I received a nice email a few minutes later stating that my payment method was denied. So, naturally I verified that the billing address was correct and checked my bank account to see if there were any problems there. Everything looked fine.I called Amazon to figure out what was going on and was informed that the expiration date on my card was wrong. This wouldnt really be a big deal except for the fact that I input that information as soon as I got my new card almost 6 MONTHS AGO and have made various purchases that went through.I was informed that this is the first Amazon had heard about it and they are immediately looking into it on their end but verified that none of my card information had been changed since I first put it in, meaning that I accidentally entered the wrong date when I first got my new card. I attempted to call USAA but it was after business hours and theyre close tomorrow so Ill have to call on Monday to talk to them. I did however send them an email about the events just to get communication and a paper trail started just in case. I will update with any responses from USAA and Amazon.This is not a rant, it is me asking everyone on rpersonalfinance to please please please verify your card information with the places you shop and to check your accounts just in case ESPECIALLY if you use USAA. P.S. If I posted this in the wrong spot please let me know and I will move it. Also, looking for relevant places to x-post. Thanks! :  <response>: Really trying to see what Im missing here. Amazon emailed you to let you know your card expired. Later you found you entered the expiration wrong when you added the card to amazon. Sounds pretty normal to me. Id be worried if they didnt let you know and you only found out after your stuff never showed.Are you concerned because the card still worked with wrong expiration date? And what would a paper trail do? Wouldnt the bank just tell you to put it in right the first time?No dickishness intended. 