<prompt> Human: My college sent me a check my name and address by mistake. It was meant to be sent to someone else with the same name. I called and they explained the error and told me I had to send it back. Im going to, but what would have happened if I cashed it and refused to send it back since it was written to me?  <response>: They cant stop payment on the check after the fact, but they could take other action against you, like suspend you from the college, or sue you. 