<prompt> Human: Hello, rpersonalfinance. I know that this comes up somewhat often with bank errors depositing money into peoples accounts, but my situation is slightly too specific to get a good answer.6ish months ago, my small business credit card number was stolen and used for an amount in the order of several thousand dollars. 6500I called the large bank chain to fix the situation, which they did. They credited my account all the money that was stolen.Then, a few days later, they credited an almost identical amount that was off by a few cents. So now the balance on my credit was negative several thousand dollars.I knew that I couldnt spend the money, and rarely use the card. So I just repaid the balance back to that negative amount each month, seeing if they would catch their error.Two months went by and I didnt hear anything. I e-mailed their help account with all of the details above, asking if the credit was in error. In return I received an, what seemed to be, automated response that pretty much said yup, your credit card has the negative balance of xxx. Have a nice day.So I went back to simply paying the charges I made and keeping the balance at that negative amount, not sure what to do. Then, I received a check in the mail saying your account had this much money on credit, so we mailed you a check for the balance and set your credit card back to 0 balance.Well, shit. Now I have this check for a decent chunk of money, and not sure what to do.I know it is not my money, and I know there are negative consequences if their error is found out at some point in the future. morality be damned, thats not the issue. Im looking for advice on the likelihood of them finding the error, and the seriousness of the consequences. I want to make an at least somewhat informed decision as to the amount of risk Im willing to take balanced against the amount the check is for.At this point it has been over 6 months. So... what now ?  <response>: I love these threads. Every time somebody gets accidental money they know they shouldnt have, this is what the thread looks like:I know this money isnt mine, and I tried giving it back one time by doing something that wasnt even related to trying to give it back! I dont want it and I know keeping it will get me in trouble, but what do you think the chances of me ever getting caught with it are going to be?The answer is: 100. This is not your money. Try harder. 