<prompt> Human: So I added my now wife to my health insurance, and they double charged me for my health insurance premium a couple weeks ago. I saw it pending in my account as two separate transactions, so I called Blue Cross and told them, and they were like Call your bank and issue a stop payment, it could take us 30 days to issue a refund, and the payment needs to go through first before we can do anything. The bank can fix it right away.So I called the bank , they said a stop payment was like 30, or I could issue a claim for free and it would be refunded when the payment gets officially posted. So I told them to go ahead and do that, and within a couple days one of the double charges gets refunded back into my account. So I am like ok, awesome everything went smooth. I do not call Blue Cross back.Well, fast forward two weeks and I get a check in the mail yesterday from Blue Cross, out of the blue, no pun intended, for the amount I was double charged. But, my account has already been refunded the money two weeks ago by the bank.So basically I have an extra 750 I pay bi-monthly thats why it is so high that I shouldnt technically have. My question is should I keep it? Should I call blue cross and tell them the mistake? I am thinking about just sitting on the check for a couple months, just to see if somewhere along the line the mistake gets fixed and my account gets debited. If not then, I will cash it. I dont absolutely need the money but it would be a huge benefit to help pay some student loans I have.Where does everyones morality lay in this case? I feel like i should try to screw the health insurance company over because they screw so many people over all the time it will be my petty revenge.  <response>: Dont worry, Blue Cross will get their money back no matter what. 