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How to react if your bank closes your account 
Find out why your account was closed. 
When you get notification from the bank that your account is being closed, that notification also may give you a reason-but not necessarily. Even if it does, it's still a good idea to call your bank's customer service number and ask.
Your country may have laws forbidding the closure of an account for a discriminatory reason, such as because of your race or gender. Aside from that, banks generally are free to close accounts for any reason or for no reason at all.