I have had an unrelated similar problem with Chase before, local interaction was all positive in sorting out a cross border issue, about a week later someone from a different office closed the account without notification, information or recourse.

Local branch manager was frustrated but couldn't get any more information. The timing really made my life difficult for a few months, completely unnecessarily.

That was the last time I banked with Chase. A few colleagues told me they proactively left after also, due to the way it was handled - who knows if that was true.