Follow me on this one: let’s say the exact same bank physically printed the exact same 1,300 customer records, put them in an envelope, and accidentally sent them to the wrong physical post office box. Let’s say it was your address. Would they even have a remote chance of getting a court order to keep you out of your PO Box until authorities (or the bank itself) was finished searching your mail and destroying anything it thought was theirs?
Of course they wouldn’t. Would they be able to sue you to get the property back? Probably not. So, why should our digital property be treated any differently?