The bank/credit union closed my checking account even though I did not want them to. Can the bank/credit union do that?

A bank or credit union is most likely to do this if you have written bad checks or don’t have enough in your account to cover your fees. Banks and credit unions may also close dormant accounts for which there has been no activity for a substantial period of time (generally years). Some states may require your bank or credit union to give you notice before it closes your account.