Interesting about the mortgage. I'm assuming the bank was just servicing the mortgage and sold it off long ago to Fannie or Freddie. You would think there would be some sort of contract language where they can't just stop servicing the account without cause. I don't think another bank would just pick it up like that as they probably don't make much if anything off doing so.
I've learned that contracts basically means nothing. The major player can essentially do whatever they want and break any rule and regulation at a whim. They know most people will not fight them through the legal system.
If a bank shuts down your account and don't want to service you whatsoever, do you move everything to a new banks, or do you start a legal process that could take years? Most normal folks don't have the desire to waste resources on such processes.
What the contract says has next to no value, big companies and state entities always do whatever the hell they want to do. You could always point to the contract and said they've breached their promise, but at that point, if they're not cooperative, what else could you do ?
You could sue, and perhaps you'd even win, but the process would take a lot of time, and take a lot of resources from you, that you could spend on other more constructive things.
I can understand this for a demand deposit account, it's relatively easy to transfer this to another bank but for a mortgage (which if conforming is sold after booked) is a bit different. The bank is basically out of the loan so to speak and has sold it off and is just acting as a payment processor. I don't know what type of benefits they receive for this but it seems like another bank wouldn't be all that enthusiastic to take that responsibility on.